After a preliminary hearing Monday for a group of Penn State fraternity brothers accused in the hazing death of Timothy Piazza, Piazza’s father spoke out about the lack of decorum present among the boys. During the hearing, surveillance video was presented for the first time in public from the night of the 19-year-old’s death.

Piazza died in February after a night-long hazing ritual known as “the gauntlet,” during which he consumed excessive amounts of alcohol at the Beta Theta Pi house. In the presented video, Piazza could be seen falling a number of times, including down a flight of stairs, as fraternity brothers did little to assist him.

Read: Timothy Piazza ‘Looked Like A Corpse’ Before Penn State Fraternity Hazing Death

“Following the hearing, most, but not all, of the fraternity brothers and their families got together, laughed, patted each other on the back and hugged as if this was just another fraternity get-together,” Timothy’s father, James Piazza, told reporters Tuesday. “We are highly offended by the insensitivity displayed given the severity of the crimes committed and the ultimate outcome.”

The hearing was held for 16 of 18 accused brothers to determine whether there was enough evidence for the case to continue to trial. The judge eventually ordered the hearing to be continued later in the summer in order to cross-examine the one man who testified, State College Police Detective David Scicchitano.

“He looked dead,” Scicchitano said at the hearing about Piazza’s appearance on the surveillance video. “He looked like a corpse.”

In the tapes, Piazza was recorded falling down a flight of stairs at 11:22 p.m. Following moments recorded Piazza falling a number of other times, his condition clearly deteriorated, as brothers left him unconscious on the couch or slapped him and poured liquid on him. Fraternity brothers did not call 911 until 12 hours after he originally fell down the flight of stairs.

“I don’t see anyone acting sad,” Centre County District Attorney Stacy Parks Miller said after the hearing. “This is about Tim Piazza. This is about a dead boy.”

Piazza’s father also denounced defense attorney Andy Shubin’s claim that Monday’s 10-hour court session was “cruel and inhumane punishment.” He said other defense attorneys supported the statement and made jokes.

“Of course, this comes right after all of them watching video for five hours of what real cruel and inhumane punishment was when the fraternity brothers essentially murdered our son, tortured him, held him captive and left him for dead over a 12-hour period of time,” he said.

Piazza’s family has been vocal about their son’s death and the accusations against the fraternity brothers.

Read: Timothy Piazza’s Death Was ‘Murder’ And ‘Torture,’ Family Says

“This wasn’t boys being boys,” his father told CBS News in May. “This was the murder of our son. They tortured him for 12 hours. They let him suffer for 12 hours. He died a slow and painful death at the hands of these ‘men of principle,’ as they call it.”

Piazza’s father also said the doctor told the family that Timothy would have lived if he had gotten help soon.

“They killed him,” he said. “They fed him lethal doses of alcohol and they killed him.”

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