PLEASANT HILL -- A man walking on a residential street was attacked and robbed Monday night, police said.

The victim, estimated to be in his 50s, was walking on Camelback Road off Chilpancingo Parkway around 11 p.m. when the suspect jumped him from behind near Chollo Court, Pleasant Hill police Sgt. Scott Vermillion said. The attacker threw the man to the ground and punched him several times, Vermillion said.

Despite the attack, the victim emerged OK and did not lose any property, Pleasant Hill police Sgt. David Downs said. Police are calling the crime a robbery because the intent was there to take the man's possessions, he said.

"It's essentially because of the act," Downs said. "Basically, the crime has been committed once the act has been put into motion, and the punishment essentially is the same even though no loss is reported. For our reasons, that's why we classified it (that way)."

Police had not made any arrests as of Tuesday morning. Police said the suspect jumped into a black American-made sports car that was driven by somebody else and fled.

Anyone with information is urged to call Pleasant Hill police at 925-288-4630.

Contact Rick Hurd at 925-945-4789 and follow him at Twitter.com/3rderh