An injured police officer said Saturday that a prisoner on Rikers Island broke the nose of an urban correctional officer with a head bump in an unprovoked attack.

At around 8 pm on December 3, in the entrance ward of the Robert N. Davoren Complex, the famous Bloods member Joshua Yu was tied to his ankles, and his handcuffs were connected to a chain around his waist. At that time, he refused to spit out the small blade hidden inside. . The injured police officer told the "Daily News".

The police officer, who asked not to be named, said he told Yu that he would not be allowed to return to the cell until he vomited the contraband.

"He is talking to us, but he sounds like he is trying to keep his mouth from choking," the police officer said.

"He became aggressive. He wanted us to free him from the bondage, but we told him that we can't do that unless he spit out the blade."

When Yu refused and left his reception room to discuss his situation with a captain, the officer said he was blocking Yu's way. At that moment, Yu, who was 6 feet 1 inch tall, leaned back and bumped his forehead against the guard's nose, the officer recalled.

"I saw his blonde hair moving and his head fell on me," said the six-year veteran. "He really shocked me."

With a violent blow to the head, the prison guard's colleagues rushed on and subdued him.

"One thing I remember is the sound it made," the police officer said, recalling how he felt the blood in his nose drip from his face. "It's unbelievable. He played well."

"I can feel the bones (in my nose) have moved to the right," he said. "I went to the clinic and then to the hospital."

Correctional officials are still investigating the incident on Saturday, but a department spokesperson said the agency is "hunting down the people involved."

Court records show that Yu has been sentenced to prison for robbery, assault, burglary and forced contact in Queens since June.

The attack took place the day after Mayor De Blasio and U.S. Department of Commerce Commissioner Vincent Silaldi announced that violence in the troubled prison had decreased in recent months. The Correctional Services Department stated that between June and November, attacks on correctional officers fell by 12%, and fights between prisoners fell by 10%.

"Our mayors and corrections commissioners who have committed criminal negligence need to explain to the public whether this brutal attack on our police officers reflects the reduction in prison violence," Bennibosio, the Charity Association of Correctional Officers, said on Saturday. "For the officials and prisoners in our prison, this is the most dangerous year."

"Despite what they say, what happened to Rikers is not safe," the guard told The News. "In the past year and a half, the situation has been out of control and the prisoners know it. They have all the control, and you are fighting for your life."