SAN FRANCISCO (AP) — Police in San Francisco say a 38-year-old man is in critical condition after being attacked by a man armed with a hatchet.

San Francisco police say the man was walking home Tuesday in the Tenderloin neighborhood when the suspect yelled at him and attacked him with a hatchet.

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Police did not release a motive in the attack. The Tenderloin neighborhood near San Francisco’s City Hall has a large population of homeless and people addicted to drugs.

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The San Francisco Chronicle reports the attack happened less than half a mile away from UC Hastings School of Law.

Police say the suspect fled in an unknown direction and no arrests have been made.

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Police did not identify the victim, who was transported to the hospital with life-threatening injuries.