Police in Tewksbury, Massachusetts, are investigating a stabbing.
The Tewksbury Police Department said it searching for a man "who stabbed another person on the State Hospital grounds." The department later identified that man as Brian Kobs.
Tewksbury Hospital is located on East Street near the former site of Tewksbury State Hospital, which is now home to a museum.
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Police say the incident occurred around 7 p.m., and that Kobs and the victim, who are known to each other, were involved in a fight.
A knife was used in the attack.
The victim was taken to an area hospital with injuries that are not believed to be life-threatening.
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Investigators believe Kobs fled from the hospital's grounds, fleeing toward the library. He is considered armed and dangerous, and people in the area are being asked to stay on high alert.
Police say Kobs is about 5'11. When he was last seen, he was wearing a black and white shirt, a tan or yellow jacket, jeans and grey shoes. Authorities initially said he was wearing a blue sweatshirt.
Local police have requested assistance from the Massachusetts State Police Air Wing helicopter and K9 units.
Anyone with information is asked to call the Tewksbury Police Department. Anonymous tips can be left here.
