BERKELEY -- A man sitting in his car with a woman at a popular lookout on Grizzly Peak Boulevard was pistol-whipped and robbed on Saturday, authorities said.

The pair were parked at a signpost turnout on Grizzly Peak Boulevard around 2:50 a.m. when two men approached, according to UC Berkeley police. One man began beating the driver in the head with a handgun through an open window and yelling for his money while the other man opened the door and rifled through the man's pockets.

After taking the man's property, the suspects drove off in a newer model, baby blue, 4-door sedan driven by a woman. The victims were later stopped by Kensington police for a traffic violation and taken to a hospital, each suffering from lacerations to the face.

The man armed with a 10-inch gray or black handgun was described as a Hispanic male in his mid-20s, about 5 foot 10 inches tall and 130 pounds with black hair and brown eyes and wearing a black button-up collared shirt and light colored jeans. Police did not have a complete description of the other suspect, but said he was white, about 20 years old, 6 feet 2 inches tall, and about 130 pounds.

The woman who drove them away is described as Hispanic, in her mid-20s, about 5 feet 6 inches tall and 140 pounds with long straight brown hair pulled back in a ponytail.

The normally idyllic Grizzly Peak Boulevard was also the site of a homicide on May 12. Alverto Santana-Silva, 21, of Fremont, was shot and killed at 5:40 a.m. after trying to break up a fight, according to police. No arrests have been made in that case.

David DeBolt covers breaking news. Contact him at ddebolt@bayareanewsgroup.com. Follow him at Twitter.com/daviddebolt.