SAN FRANCISCO (CBS SF) — Police in San Francisco are investigating an attack in the city’s Excelsior District that left a man hospitalized in critical condition on Thursday afternoon, authorities said.

Around 4:50 p.m., officers responded to a report of an assault near Mission Street and Persia Avenue, police said.

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Arriving officers got to the scene and learned two suspects allegedly pushed a man to the ground and assaulted him.

The victim, a 48-year-old man, was taken to a hospital to be treated for life-threatening injuries, police said.

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The suspects, described as two men in their 20s, fled the scene and have not been apprehended.

Anyone with information is being asking to call the Police Department’s anonymous 24-hour tipline at (415) 575-4444 or to text a tip to TIP411 with “SFPD” at the start of the message.

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