Three American citizens were taking an Uber Thursday night from a nightclub to their rented apartment in Rosarito, Mexico, when their Uber driver was shot and killed, Mexican authorities confirmed to NBC7 San Diego Monday.

The 28-year-old Uber driver was transporting two men and a woman — all U.S. citizens — from the nightclub Papas and Beer to a residence at Club Marena, Rosarito police officials said.

The victim was shot multiple times by a driver who pulled up next to the Uber car in a black sedan at about 11:35 p.m., according to police. Rosarito is a resort city south of Tijuana in Baja California.

The passengers in the Uber rushed to try and help their driver, police said. However, by the time police arrived on scene, the man was dead.

The victim was identified as Jose Humberto Felix Mendez of Mexico. There is no known motive for the attack.

None of the passengers were injured, a representative for the Rosarito Police Department said.