Sketches released in deadly stabbing of tourist in San Francisco

These April 5, 2016, police sketches provided by San Francisco Police Department shows two robbery suspects involved in a fatal attack in Feb. 18, 2016, in San Francisco. Police released the sketches Monday, April 11, of a couple they say attacked British tourist 48-year-old Paul Tam, of Manchester, near San Francisco's Cathedral. Police have yet to make an arrest in the attack, which is now being investigated as a homicide. (San Francisco Police Department via AP) (San Francisco Police Department via AP)

San Francisco police investigators have released sketches of a man and a woman wanted in the killing of a British tourist.

Police released the sketches Monday of a couple they say attacked 48-year-old Paul Tam, of Manchester, near San Francisco's Cathedral.

Last month, investigators released surveillance video that shows a man chasing Tam onto a street, stabbing him while he's on the ground and taking his bag before running away.

Tam died March 24 at a San Francisco General Hospital, where he was taken after the Feb. 18 attack.

Police have yet to make an arrest in the attack, which is now being investigated as a homicide.

The San Francisco Police Officer's Association is offering a $5,000 reward for information leading to the arrest of the two suspects.

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