The first departmental trial for two New York City Police Department officers involved in the Sean Bell shooting officially got underway Monday.

Bell was killed with 50 shots on his wedding day outside a Jamaica strip club back in November 2006.

Three involved detectives were acquitted of manslaughter in a criminal trial in 2008 but the two policemen facing departmental charges could lose their jobs.

Detective Gescard Isnora, seen above left, who is believed to have fired the first shot, and Officer Michael Carey, seen above right, are accused of violating NYPD guidelines in firing their weapons.

Carey never faced criminal charges.

Bell's fiancée, Nicole Paultre Bell, said Monday she is hoping that this time someone will answer for her late husband's death.

"The [accused officers] are allowed to continue and go on with their lives and live with their families and be with their families. Sean is not here, we don't have that luxury. And it is not fair to my family, it's not fair to my daughters, who miss their father," said Bell.

The involved policemen were investigating possible drug sales and prostitution at the Queens strip club, and Isnora said he thought Bell and a friend, Joseph Guzman, were getting a gun to shoot a man they had argued with.

Isnora said he tried to stop Bell's car, but it clipped him and hit an undercover police van. The police officer then fired into the car 11 times.

During Monday's hearing, a NYPD lawyer said Isnora "wrongfully came out of his role as an undercover.... and wrongfully fired his weapon."

The lawyer went on to say, "This error in judgment facilitated everything that happened after that."

"This day is bringing back memories and knowing what they did is wrong," said Valerie Bell, Sean Bell's mother. "And just praying that they get something taken away from them, like we had my son taken away from us."

Union officials in the Detectives Endowment Association called the hearing is a witch hunt.

"The advocate's office can be so out of touch with the risk and dangers that the officers really face every day out in the street," said DEA official Michael Palladino.

Detectives Michael Oliver, Marc Cooper and Paul Hedley also fired shots, but DEA officials said they are trying to work out a deal with the NYPD so those officers can retire and keep their pensions.

The city previously settled a civil suit by paying $7 million to Bell's family and Guzman and Trent Benefield, Bell's two friends who were injured in the shooting.