Police were called in last month to shut down out-of-control party at the frat house, which is not recognized by UC Berkeley

as UC Davis student Vaibhev Loomba; he was not a member of Zeta Psi

The 20-year-old man was found unresponsive 'with

Victim: Police have identified Vaibhev Loomba as the man who was found dead at Zeta Psi house in Berkeley, California, Sunday

A 20-year-old man was discovered dead at a fraternity near University of California at Berkeley following a party Saturday night.

Police said they got a 911 call at around 12.10pm Sunday about an unresponsive male at 2728 Bancroft Way, the home of the Zeta Psi Greek organization.

The victim has been identified by police as 20-year-old Vaibhev Loomba, an engineering student at University of California at Davis.

The young man was found unresponsive in one of the upstairs rooms inside the frat house.

Paramedics who responded to the address pronounced him dead at the scene.

Loomba was said to be one of about 100 guests who attended the party organized by Zeta Psi Saturday night. He was not a member of the fraternity.

Lt Ed Spiller said police have classified the death as 'suspicious.' Drugs and alcohol have not been ruled out as contributing factors.

‘We err on the side of caution, so we deem it suspicious until we can prove otherwise,’ Spiller told KTVU, adding that homicide detectives are looking into the case.

No time of death has been given since investigators are not sure how long the 20-year-old had been dead before officers arrived.

A witness told the local independent news site Berkeleyside that Vaibhev Loomba was discovered lying face down on the floor with vomit around his mouth.

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The young man was found unresponsive in one of the upstairs rooms inside the frat house on Bancroft Way

Police are not sure how long Loomba had been dead in an upstairs room by the time paramedics arrived on the scene

Sad end: The victim's body was removed by the coroner's office after a four-hour investigation

Loomba's friends have been posting tributes on Facebook in memory of the seemingly popular engineering student.

'One of the most genuine guys I know, gone far too soon,' wrote Michael Riel. 'Save me a spot up there.'

Loomba's high school friend Aidan Maguire shared a photo of himself posing with Loomba dressed as the Disney character Aladdin, writing on his Facebook page: ‘One of the greatest guys I may ever know. Always making me laugh and radiating positivity wherever he went. May he rest in peace and be forever remembered.’

According to his LinkedIn page, Loomba studied engineering at UC Davis and was expected to graduate in 2016. He was also the founder and CFO of a non-profit organization he had started with a relative last year.

Tribute: Loomba's high school friend Aidan Maguire (left) shared this photo of Loomba (right) dressed as Aladdin, writing on Facebook that the 20-year-old was one of the greatest guys he's ever met

All-American kid: Loomba graduated from Acalanes High School in Antioch, California, where he headed the debate team, presided over Model UN and ran track

Promising future: Loomba (second left) studied engineering at UC Davis and was expected to graduate in 2016

In 2012, Loomba graduated from Acalanes High School in Antioch, where he headed the debate team, presided over Model UN and ran track.

The Zeta Psi fraternity is not recognized by UC Berkeley. According to students and police, it has a reputation for throwing large, often very rowdy parties attended by hundreds of people.

Police say they have been called to the off-campus fraternity house in the past.

As recently as October, officers shut down an out-of-control gathering hosted by Zeta Psi.

Following the incident, city officials posted a notice outside the frat house door warning of a $750 fine if there were additional violations.

A witness saw vomit around Loomba's mouth as he lay face down on the floor. Police have classified the death as suspicious

On notice: City officials posted this notice outside the frat house door in October after a rowdy party warning of a fine in case of additional violations

On Monday, Zeta Psi released a statement addressing the fatality near the UC Berkeley campus.