A man was stabbed Friday afternoon on the Capital Crescent Trail, one of the area’s most popular walking, bicycling and commuting paths.

The stabbing, which involved people who knew each other, appeared to have no connection to a recent sexual assault that occurred in the Bethesda area on the same trail.

Friday’s incident occurred about 4 p.m. in the vicinity of Bethesda Avenue, said the Maryland-National Capital Park Police.

Police said three men who “were known to each other” got into a physical altercation, which resulted in the stabbing. The stabbing was “not a random event,” the park police said.

In addition to the sexual assault, which occurred about a half-mile west of Massachusetts Avenue, several attacks in the tunnel on the trail in the downtown Bethesda area have called attention to safety on the pathway.

The latest incident occurred a relatively short distance west of the entrance to the tunnel where assaults and robberies have occurred this year. At least one arrest was made in one of them.

In the incident earlier this month, a 21-year-old woman told officers she was running on the trail about 7 p.m. between Massachusetts Avenue and MacArthur Boulevard when she stopped to watch deer cross the path.

She was hit on the head from behind. Police say she regained consciousness in the woods and yelled for help. She was taken to a hospital in serious condition for treatment of a head injury.