NEW YORK -- Closing arguments were heard in the assault trial of State Senator Hiram Monserrate Tuesday. The defense rested its case Thursday, without calling the Queens lawmaker to the stand.

Monserrate has pleaded not guilty to charges that he purposely cut his girlfriend's face with a broken glass in a jealous rage last December.

Most of the case against Monserrate is based on the testimony of hospital staff, who say Monserrate's girlfriend Karla Giraldo told them it wasn't an accident and called her boyfriend crazy.

Defense attorneys say the prosecution can't prove what went on inside Monserrate's apartment that night. They also say hospital workers pressured Gilraldo to say it was domestic abuse.

The court also got a chance to see some of the surveillance video from Monserrate's apartment building from that night in December. The defense says the video shows exactly what he should have been doing, which was getting his girlfriend to the hospital.

"What she's doing is consistent with what she's testifying she's doing, which was acting hysterical, saying she didn't want to go to the hospital. The hospital personnel said that Karla Giraldo said that. So you can put whatever spin you want on it, but the evidence, and the facts and the witnesses, this was not an act of violence. It was reasonable and necessary,” said Defense Attorney Joseph Tacopina.

Monserrate faces prison time and the loss of his Senate seat if convicted.