By George P. Hassett

An alert police officer caught a Malden man trying to sell his mom’s laptop computer in a Dunkin’ Donuts parking lot on Broadway Monday, police said.

Detective James Slattery allegedly watched Dana Memory, 22, hand a bag of electronic devices to another man in exchange for cash at the Dunkin’ Donuts parking lot at 220 Broadway.

When police stopped Memory they allegedly found a hypodermic needle in his pocket and drugs including methadone and klonopin. He was arrested and charged with conspiracy, receiving stolen goods, possession of a class B drug and possession of a class C drug.