<p>At least four people died and 20 others went missing after three boats capsized in a dam in northwest Pakistan on Wednesday, officials said.</p>.<p>The incident occurred at Raghgan dam in Bajaur tribal district.</p>.<p>A boat with 18 people on board capsized in the dam water, following which two rescue boats were immediately rushed to the incident site. However, both the rescue boats also capsized.</p>.<p>While four bodies were retrieved, six people were rushed to a nearby hospital in critical condition, officials said.</p>.<p>The rescue authorities said 20 people are still missing and search operation is underway to trace them.</p>
<p>At least four people died and 20 others went missing after three boats capsized in a dam in northwest Pakistan on Wednesday, officials said.</p>.<p>The incident occurred at Raghgan dam in Bajaur tribal district.</p>.<p>A boat with 18 people on board capsized in the dam water, following which two rescue boats were immediately rushed to the incident site. However, both the rescue boats also capsized.</p>.<p>While four bodies were retrieved, six people were rushed to a nearby hospital in critical condition, officials said.</p>.<p>The rescue authorities said 20 people are still missing and search operation is underway to trace them.</p>