CAMBRIDGE (CBS) -- Police are looking for a suspect in a shooting that left one person hurt in Cambridge on Friday.

A Cambridge police officer working a detail in the Putnam Avenue area around 1:46 p.m. was called over to a car where the officer found a male victim suffering from a gunshot wound to his upper right leg. The officer applied first aid and stopped the bleeding, police say in a citywide alert.

The victim, who hasn't been identified, was taken by ambulance to a local hospital. His condition is unknown.

A witness told police the victim and the suspect got into an argument and then a wrestling match at the rear section of a parking lot at a Putnam Avenue home. The suspect broke free before allegedly firing a shot that hit the victim.

The suspect then sped away toward River Street.

A good Samaritan picked up the victim and the witness and was going to take them to the hospital until the officer was spotted nearby, police say.

Police are calling it a "targeted incident," saying there is no threat to the public.

The suspect is described as a light-skinned male, wearing a black sweater, jeans and white sneakers.

Anyone with information is asked to call Cambridge Police at (617) 349-3300, and anonymous tips can be left by calling (617) 349-3359 or by texting 847411 and starting your text with Tip650 and then your message.