BROOKLINE, MASS. (WHDH) - Authorities are investigating an early morning assault at a park in Brookline that left a man seriously injured.

Emergency crews responding to Amory Park just after 1:30 a.m. Tuesday found a 20-year-old man in serious condition following an assault involving a dangerous weapon, Brookline police said.

The victim was transported to Beth Israel Deaconess Medical Center.

State police say they are assisting Brookline police with a stabbing investigation.

Police have not said if anyone was arrested.

This is a developing story; stay with 7NEWS on-air and online for the latest updates.

This is a developing news story; stay with 7NEWS on-air and online for the latest details.

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