Authorities in Natick, Massachusetts, are looking for a suspect in a stabbing that happened behind a Michael's craft store.
Police say it happened around 2 p.m. behind the craft store's Route 9 location Tuesday.
Cleanup crews could be seen at the store hours after the bloody victim ran inside looking for help.
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Police say two men got into a fist fight near the back of the building, which led to one of the men taking out a knife and stabbing the other in the back.
"They were known to each other," said Natick Police Lt. Cara Rossi. "We don't know what the relationship was or the extent of the relationship, but according to the victim, he did know, or a family member was familiar with the suspect."
A surveillance image released by police shows the suspect appears to be an adult male with a long, scraggly beard, approximately 5-foot 10-inches, who was dressed in all black with a black hat and black gloves.
"It was kind of scary, especially since we work right here," said Michelle Kirouac, who works at LensCrafters in the same shopping plaza. "Especially someplace like Michael's, you wouldn't think anything would happen there."
Police say the victim had been shopping inside Michael's, but it's unclear if the suspect knew he was there and was following him, or if the two just ran into each other.
The victim was stabbed multiple times and ran inside the store asking for help. Customers told employees to call 911.
The man sustained serious injuries but is expected to survive.
The suspect ran off into the woods behind the store and got away. Police think the suspect has left the area, and they do not believe the public is in any danger.
Michael's spokesperson Mallory Smith said the company was "saddened to hear about the incident" at their Natick store but is not commenting further because it is an ongoing investigation.
The circumstances surrounding the stabbing remain under investigation.
Anyone with information is asked to call 911.