A man was victimized twice by the same crook after being robbed of his laptop Saturday at the main branch of the San Francisco Public Library, police said.
The 53-year-old victim was first robbed of his laptop in the library by a man who appeared to be in his 20s, police said.
The victim then found the crook near the Civic Center BART station and gave him money to get his computer back, police said. As the suspect handed the computer back, he punched the victim in the face and fled northbound on Leavenworth Street with the laptop and cash.
No arrest has been made.