Authorities say a Montana Highway Patrol trooper and three other people have been shot and injured in two separate shootings that were related.

The Missoula County sheriff's office says the man suspected of wounding the trooper and the others was arrested early Friday near the small community of Evaro, where the trooper was shot.

The trooper was among law enforcement officers searching for a man suspected of shooting and injuring two men and a woman in their vehicle late Thursday in Missoula.

The search for the shooter's vehicle moved northwest of Missoula. Officials said the trooper was shot at a bar in Evaro.

Sheriff's spokeswoman Brenda Bassett did not identify the injured and declined comment on their injuries.

The suspect was identified as 29-year-old Johnathan Bertsch.

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