According to Japanese Government the incident of a Korean naval vessel directing its FC radar at an MSDF patrol aircraft. This video was filmed by P-1 (maritime patrol aircraft), Fleet Air Wing 4, JMSDF.
Japan Ministry of Defense
CC BY 4.0
<p><a rel="nofollow" class="external text" href="http://www.mod.go.jp/j/press/news/2018/12/28z.html">韓国海軍艦艇による火器管制レーダー照射事案について</a>. 防衛省 (<span class="mw-formatted-date" title="2018-12-28">2018-12-28</span>). Retrieved on <span class="mw-formatted-date" title="2018-12-30">2018-12-30</span>.<br></p>
<bdo lang="en" dir="ltr"><a href="//commons.wikimedia.org/wiki/Commons:YouTube_files" title="Commons:YouTube files">YouTube</a>: <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=T9Sy0w3nWeY"><bdi lang="">韓国海軍艦艇による火器管制レーダー照射事案について</bdi></a> – View/save archived versions on <a rel="nofollow" class="external text" href="https://web.archive.org/web/*/https://www.youtube.com/watch?v=T9Sy0w3nWeY">archive.org</a> and <a rel="nofollow" class="external text" href="https://archive.today/https://www.youtube.com/watch?v=T9Sy0w3nWeY">archive.today</a></bdo>