A 23-year-old homeless man was arrested Sunday after a 67-year-old man told police the younger man pulled a knife and demanded his laptop computer.

Police said the two men are acquaintances, and that the younger man showed up at the other man's Ward Avenue home about 3 p.m. yesterday.

The younger man ran from the home, but was found by responding patrol officers near 632 Magellan Ave., police said.

He was arrested on suspicion of first-degree robbery.