Opposition leader Sam Rainsy on March 30 called for the US Federal Bureau of Investigation to renew its probe into a grenade attack that killed at least 16 people more than a decade ago.

Sam Rainsy addressed supporters outside Cambodia’s parliament, where exactly 11 years ago four grenades were hurled into a crowd of anti-government protesters, wounding at least 120 people including a US citizen.

Despite the government’s insistence that the case is still open, no one has been arrested in connection with the bloody attack.

“I not only appeal to the FBI to renew their investigation but also appeal to the FBI to reveal the result of their past investigations,” Sam Rainsy said.

The FBI opened a probe into the attack but the investigation was hampered by uncooperative Cambodian government officials.

Rights groups have accused Prime Minister Hun Sen’s bodyguards of throwing the grenades.

New York-based Human Rights Watch on March 30 also urged the FBI to reveal what it said was “damning evidence” about Hun Sen’s connection to the bombing.

“Instead of trying to protect US relations with Cambodia, it should now finish what it started,” said Brad Adams, the group’s Asia director. (AFP)