Two men pleaded guilty to hate crime charges in the attack on a Sikh taxi driver in Sacramento the U.S. late last year, as police and FBI have launched a massive manhunt to nab the attackers of two other elderly members of the community.

Pedro Ramirez, 42, of Natomas, on Monday pleaded to a felony assault charge at Yolo Superior Court in California, and admitted that his attack on Harbhajan Singh on November 28, 2010 was a hate crime.

He admitted that he injured the victim badly.

Johnny Morales, 33, of West Sacramento also pleaded to the felony assault.

Reference to Laden

The two assailants reportedly made references to Osama Bin Laden while beating and robbing Singh, a local newspaper reported.

Ramirez, who played a larger role in the attack, will be sentenced to 13 years in jail, while Morales, whose role was smaller, gets only one year.

According to a statement from the Chief Deputy District Attorney Jonathan Raven, Singh was driving the defendants and their wives home from Harlow's Bar in Sacramento.

During the cab drive, Ramirez shouted racial epithets and accused Singh, who had a beard and was wearing a traditional Sikh turban, of being Muslim.

Ramirez punched Singh in the face about 10 times while Morales punched him from behind, Raven stated. — PTI