diff --git a/CHANGELOG.md b/CHANGELOG.md
index a5465f7..18510ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ All notable changes to this project will be documented in this file.
 ## [0.0.3]
 
 - implement date arguments for weekly-report #5
+- add `close` command to close issues, #4
 
 [0.0.3]: https://github.com/eventum/cli/compare/0.0.2...master
 
diff --git a/README.md b/README.md
index 2ca3830..14865b4 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,7 @@ Available commands:
 | Command | |
 | ------------- | ------------- |
 | **add-attachment** | Add attachment to issue  |
+| **close** | Marks an issue as closed |
 | **open-issues** | List open issues |
 | **set-status**, **ss** | Set Issue status |
 | **view-issue** | Display Issue details |
diff --git a/src/Application.php b/src/Application.php
index 56e8106..b620cc4 100644
--- a/src/Application.php
+++ b/src/Application.php
@@ -57,6 +57,7 @@ protected function getDefaultCommands()
         $commands[] = new Command\ConfigCommand();
         $commands[] = new Command\AddTimeEntryCommand();
         $commands[] = new Command\SetIssueStatusCommand();
+        $commands[] = new Command\CloseIssueCommand();
 
         if (strpos(__FILE__, 'phar:') === 0) {
             $commands[] = new Command\SelfUpdateCommand('self-update');
diff --git a/src/Command/CloseIssueCommand.php b/src/Command/CloseIssueCommand.php
new file mode 100644
index 0000000..ad89c69
--- /dev/null
+++ b/src/Command/CloseIssueCommand.php
@@ -0,0 +1,197 @@
+<?php
+
+/*
+ * This file is part of the Eventum (Issue Tracking System) package.
+ *
+ * @copyright (c) Eventum Team
+ * @license GNU General Public License, version 2 or later (GPL-2+)
+ *
+ * For the full copyright and license information,
+ * please see the LICENSE and AUTHORS files
+ * that were distributed with this source code.
+ */
+
+namespace Eventum\Console\Command;
+
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class CloseIssueCommand extends Command
+{
+    protected function configure()
+    {
+        $this
+            ->setName('close')
+            ->setDescription('Marks an issue as closed')
+            ->addArgument(
+                'issue_id',
+                InputArgument::REQUIRED,
+                'Issue id'
+            )
+            ->addOption(
+                'status',
+                's',
+                InputOption::VALUE_REQUIRED,
+                'New status for issue'
+            )
+            ->addOption(
+                'resolution',
+                'r',
+                InputOption::VALUE_REQUIRED,
+                'Resolution for issue'
+            )
+            ->addOption(
+                'notify',
+                null,
+                InputOption::VALUE_NONE,
+                'Send notification about issue close',
+                null
+            )
+            ->addOption(
+                'no-notify',
+                null,
+                InputOption::VALUE_NONE,
+                'Do not send notification about issue close',
+                null
+            )
+            ->addOption(
+                'message',
+                'm',
+                InputOption::VALUE_REQUIRED,
+                'Note message'
+            )
+            // project_id required when retrieving statuses
+            // should really figure that out by asking via issue_id instead
+            ->addOption(
+                'project',
+                null,
+                InputOption::VALUE_REQUIRED,
+                'Project Id'
+            )
+            ->setHelp(
+                <<<EOT
+                <info>%command.full_name% 123</info>
+
+Marks an issue as closed.
+EOT
+            );
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $issue_id = (int )$input->getArgument('issue_id');
+        $status = $this->getStatus();
+        $resolution_id = $this->getResolutionId();
+        $send_notification = $this->getSendNotification();
+        $note = $this->getMessage();
+
+        $client = $this->getClient();
+        $result = $client->closeIssue($issue_id, $status, $resolution_id, $send_notification, $note);
+
+        $message = "OK: issue #$issue_id successfully closed.";
+        $output->writeln($message);
+
+        if ($result === 'INCIDENT') {
+            $message = 'WARNING: This customer has incidents.';
+            $message .= " Please redeem incidents by running 'eventum $issue_id redeem'";
+            $output->writeln($message);
+        }
+    }
+
+    /**
+     * Return issue status title.
+     *
+     * @return string
+     */
+    private function getStatus()
+    {
+        $default = $this->input->getOption('status');
+
+        $list = $this->getClient()->getClosedAbbreviationAssocList($this->getProjectId());
+        $prompt = 'Which status do you want to use in this action?';
+        $errorMessage = "Entered status doesn't match any in the list available to you";
+
+        $answer = $this->askChoices($prompt, $list, $errorMessage, $default);
+
+        return $list[$answer];
+    }
+
+    /**
+     * @return int
+     */
+    private function getResolutionId()
+    {
+        $resolution = $this->input->getOption('resolution');
+        if ($resolution) {
+            return (int)$resolution;
+        }
+
+        $list = $this->getClient()->getResolutionAssocList();
+        $prompt = 'Which resolution do you want to use in this action?';
+        $errorMessage = "Entered resolution doesn't match any in the list available to you";
+
+        return (int)$this->askChoices($prompt, $list, $errorMessage);
+    }
+
+    /**
+     * @return bool
+     */
+    private function getSendNotification()
+    {
+        $notify = $this->input->getOption('notify');
+        $no_notify = $this->input->getOption('no-notify');
+        if ($notify || $no_notify) {
+            return $notify || !$no_notify;
+        }
+
+        $question = 'Would you like to send a notification email about this issue being closed? [Y/n]: ';
+
+        return $this->io->askConfirmation($question, 'y');
+    }
+
+    /**
+     * Get issue close message from commandline option or prompt from user.
+     *
+     * @return string
+     */
+    private function getMessage()
+    {
+        $message = $this->input->getOption('message');
+        if ($message) {
+            return $message;
+        }
+
+        $question = 'Please enter a reason for closing this issue (one line only): ';
+
+        return $this->io->ask($question);
+    }
+
+    /**
+     * ask choices, but return the key not value from the list.
+     */
+    private function askChoices($prompt, $list, $errorMessage, $default = null)
+    {
+        // default given and present in $list, use that
+        if ($default && isset($list[$default])) {
+            return $default;
+        }
+
+        // avoid asking if answer is known
+        switch (count($list)) {
+            case 0:
+                return 0;
+            case 1:
+                return key($list);
+        }
+
+        if ($default) {
+            $prompt .= " ($default)";
+        }
+
+        $answer = $this->io->askChoices($prompt, $list, $errorMessage, $default);
+
+        return array_search($answer, $list);
+    }
+}