The United States would strengthen cooperation with the international community to halt the rise of piracy in Somalia, President Barack Obama said Sunday after the release of captain Richard Phillips of a cargo ship seized by Somali pirates earlier in the day.

"We remain resolved to halt the rise of piracy in this region," Obama said in a statement. "To achieve that goal, we must continue to work with our partners to prevent future attacks, be prepared to interdict acts of piracy and ensure that those who commit acts of piracy are held accountable for their crimes," said the president.

CNN reports quoted senior US military official as saying that Phillips was now in American hands.

US Navy aboard warships launched a raid on the lifeboat in which the four pirates held Phillips, killing three hijackers and taking one in custody.

The pirates on Wednesday briefly took the Danish-owned cargo ship Maersk Alabama with the crew of 21 Americans on board. The cargo ship, carrying food aid destined for Somalia and Uganda, was attacked about 500 km off Somalia's coast.

Captain Phillips allowed himself to be taken hostage in exchange for the freedom of the 20 others. The 53-year-old captain was then taken to the lifeboat seized by the pirates from the US-flagged cargo ship.

"I share the country's admiration for the bravery of Captain Phillips and his selfless concern for his crew. His courage is a model for all Americans," said Obama.

Somali pirates have stepped up their attacks in recent weeks after a brief lull. The Maersk Alabama was the sixth ship attacked by pirates in the past week.

Pirates typically hold the ships and crews until large ransoms are paid by the shipping companies. The attacks are threatening to destabilize one of the world's busiest shipping lanes.

(Xinhua News Agency April 13, 2009)