SFO Employee Killed Co-Worker's Boyfriend Before Their Move to Vegas: Prosecutors

A man who picked up his girlfriend from her last shift at San Francisco International Airport last week and planned to move with her to Las Vegas was fatally shot by a SFO worker who sought a romantic relationship with her, San Mateo County District Attorney Steve Wagstaffe said Tuesday.

Kevin Prasad, 31, of South San Francisco, and Donovan Rivera, 25, of Hayward, were charged in the murder of 31-year-old Mark Mangaccat last Wednesday.

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Daly City PD
Kevin Prasad (left) and Donovan Rivera

Prasad, who worked at SFO with her, had been trying to develop a romantic relationship with her and urged her to dump Mangaccat but she had rebuffed his advances, prosecutors said.

As Mangaccat drove to pick up his girlfriend, the mother of their 3-year-old child last week, Rivera allegedly drove Prasad and they followed Mangaccat to his home on Abbot Avenue in Daly City, according to prosecutors.

Mangaccat was backing the vehicle into the garage and Prasad allegedly walked up and fired five to six shots into the car, killing him while not hitting the girlfriend, prosecutors said.

"The working proposition for the motive is, 'If I kill him and get him out of the way, then I could be there to start the relationship with the grieving widow,'" Wagstaffe said. "That's pretty bizarre."

Wagstaffe said the couple was planning on moving to Las Vegas after living with Mangaccat's family in Daly City and said last Wednesday had been the girlfriend's last shift.

Following the shooting, Prasad allegedly ran back to the car and Rivera drove them away from the scene, but investigators were able to identify and arrest them a day later, according to Wagstaffe.

The two defendants made their initial court appearance Monday on murder charges with a special circumstance of lying in wait.

They did not enter pleas and will return to court on May 8 for appearance of their appointed Private Defender Program attorneys and to possibly enter pleas.

Daly City police have not released any information about the case and referred any inquiries about it to the district attorney's office.

Social media posts about Mangaccat mourned his death.

"He was one of the nicest people," one post read. "I still can't believe it."

Meanwhile, three weeks ago Prasad apparently testified at a San Francisco Board of Supervisors hearing on raising minimum wages for workers, saying he was a security officer at SFO who is also "a veteran and part of the working poor."

The clip of Prasad speaking at the hearing was posted on the Facebook page for Airport Workers United, a union of airport workers.

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