Deputies arrested one man and sought another in connection with a bungled carjacking along Rosemead Boulevard late Wednesday in an unincorporated county area just north of Temple City , authorities said.

Angel Zuniga, a 25-year-old known San Gabriel Valley gang member and Hesperia resident, was booked on suspicion of attempted carjacking following the failed crime, reported shortly before 11 p.m. in the 6400 block of Rosemead Boulevard, Los Angeles County sheriff’s Lt. Ignacio Samoano said.

A second would-be carjacker, described as a white man in his early-20s, wearing a blue and white jersey and blue jeans, remained at large early Thursday, the lieutenant said.

The victim, a man in his early 20s, was sitting in his Chevrolet Silverado pickup truck when he was approached by two men, Samoano said.

They demanded the victim’s car keys while one of them — later identified as Zuniga — displayed a handgun that was tucked into his waistband, he said.

Samoano said the startled victim got out of his truck and walked away, leaving his keys behind inside the car and telling the men to take what they wanted.

The would-be carjackers got into the truck, but were unable to find the keys, which were inside the passenger compartment but not in the ignition, according to the lieutenant. The frustrated suspects then fled empty-handed.

Deputies responding to a report of a suspicious person about two hours later and three blocks away detained Zuniga and recognized his description from the attempted carjacking, Samoano said. He was subsequently identified by the victim as the gunman in the failed crime.

The second suspect, as well as the handgun involved in the alleged crime, had not been found Thursday.

According to county booking records, Zuniga was being held in lieu of $100,000 bail pending a scheduled arraignment Monday in Alhambra Superior Court.