A one-block section of North 10th Street, between Main and Idaho streets, closed earlier Friday morning, was back open after 11 a.m.
The road was shut down as Boise police dealt with a “distressed person.”
Police responded a little after 9 a.m. to a person “having trouble” in a building in the 900 block of Main Street.
Police were able to calm the man down and take him into custody, police spokeswoman Haley Willaims said. It was not immediately clear whether the man might be charged with a crime.