SAN DIEGO - A cab driver was robbed at gunpoint in Pacific Beach Monday, and another driver was held up in Mission Beach about 15 minutes later, San Diego police said.

A man walked up to a cab driver in the 800 block of Missouri Street near Bayard Street around 1 a.m., threatened him with a handgun and demanded money, San Diego police Officer David Stafford said. The robber then ran off, he said.

The robber was described as a black man with a medium build and no facial hair, wearing a brown jacket and boots. Police said the gunman took the driver's wallet, car keys and cash.

About 1:15 a.m., a taxi driver in the 3500 block of Mission Boulevard near El Carmel Place was approached by a gun-wielding man who threatened him and demanded cash, Stafford said. The robber again got away with cash and personal property, he said.

The robber in that heist was described as black, 29 or 30, weighing about 180 pounds and wearing a brown jacket and jeans.

Monday morning's robberies have some cab drivers thinking about changing jobs.

Cab driver Jama Ali said, "We don't want this kind of crazy things now."

Ali said there is no way to protect themselves, and said if they "put something that covered the middle of the car, maybe it will work; maybe a camera."