A construction site collapse Friday morning at a church in Nisswa, Minn., injured several workers, authorities said.

The incident occurred about 7:15 a.m. at Timberwood Church, were an addition is under construction, according to the Crow Wing County Sheriff's Office.

A work crew from Nor-Son Inc. was placing trusses when something gave way, leading to the collapse, said Sheriff's Lt. Joe Meyer.

Among those injured, three were sent to a Brainerd hospital for treatment, Meyer added.

The incident is being investigated by Minnesota OSHA, an official with the agency said.

The church, located along Hwy. 371 and northeast of Gull Lake, is in the process of adding a 740-seat worship center, meeting space, offices, storage and parking, according to its website.

Construction began July 1 and was scheduled to be complete by early next spring, the website added.

Paul Walsh • 612-673-4482