Air pig,
Are you referring to the video of the pirate boat being blown up off Somalia by the Russian Navy back in 2010? The video was doing the rounds for some time with various dodgy claims that the pirates were still handcuffed on the ship when it was sunk.
In reality all those people captured on board the pirate vessel were returned to their respective countries (Iran and Pakistan). The video was misleading as people assumed that the pirates were still on board the vessel as it was being destroyed.
In the original video the Russians can be heard asking the crew who is Pakistani and later on asking for Iranians.
See following video for Russian news item.
Investigation has revealed that all the suspected pirates are not from Somalia and some are fishermen from Iran and Pakistan. It is not clear whether Iranian and Pakistani fishermen are working as navigators for Somali pirates for monetary gains.
Also Russia is not able to decide, where and how to proceed with these suspected pirates.
Update: May 05
Russian missile destroyer Admiral Panteleyev has freed eight Iranians who were part of the 29 suspected pirates. It is reported that Iranians were kept as hostages by the suspected Somali pirates for more than three months.
From
Somali Piracy: Suspected Pirates are Also from Iran and Pakistan
Russia was considering trying those detained.
Somali pirates could face trial in Russia
Somali pirates could face trial in Russia | Russia | RIA Novosti
In the end the Pakistanis and Iranians were returned to their respective countries.
Russia hands over Somali pirates to Middle East states ? RT News