Updated

A Michigan prosecutor says a man has been charged in the shooting deaths of well-known anti-abortion activist and a business owner and that he planned to kill a third man.

Shiawassee County Prosecutor Randy Colbry says Harlan James Drake is accused of shooting 63-year-old James Pouillon in front of a Michigan high school. Hours later, Drake is accused of killing Mike Fuoss, 61, at a nearby gravel pit company.

Colbry says Drake intended to kill a third man, but was arrested before Drake could do so.

Ossowo Hish School was placed on immediate lockdown, though no students were hurt or involved in the shooting, school officials told the paper.

Police barricaded a section of street in front of the high school, where a large sign bearing the image of a baby and the word "Life" was visible, according to the Flint Journal.

When authorities were responding to the first shooting, officials received a report that another man had been shot and killed at a gravel pit business in Owosso. Shiawassee County Sheriff George Braidwood said Mike Fuoss was found dead in his office.

School officials say the first shooting took place outside of school grounds around 7:30 a.m., when most students were already inside the building for classes. The school, located 20 miles west of Flint, was allowing students to leave with a parental escort, WLNS News reported.

Click here for more on this story from the Flint Journal.

The Associated Press contributed to this report.