A teenager who allegedly threatened to shoot up a Michigan courthouse has been charged with a felony.

Anthony B. Ostrander, 19, on Thursday, March 29, appeared in Gladwin County District Court for arraignment on one count of making a terrorist threat. The charge is punishable by up to 20 years imprisonment and a $20,000 fine.

The arraigning judge set Ostrander's bond at $1 million and he remains in custody in the Gladwin County Jail.

Sheriff Michael Shea previously said Ostrander on Wednesday made threats to enter the courthouse at 401 W. Cedar Ave. and shoot people. Ostrander made his threats via phone calls, Shea has said.

Ostrander made the threats after authorities issued a personal protection order against him, the sheriff has said. At the time, Ostrander already had a prior PPO against him.

Read more: MLive (Michigan)