MILLIS, Mass. (AP) – Officials in Millis locked down three schools Friday after the father of an eighth-grader allegedly threatened to kill his son’s baseball coach, police said.

The schools reopened five hours later after police arrested William Santafe, 46, of Westboro, at his job in Chelmsford.

Upset over his son’s lack of playing time, Santafe allegedly threatened the life of Millis High School’s freshman baseball coach during a telephone conversation with Millis athletic director Chuck Grant.

“He talked to the athletic director and basically he said, The coach of the freshman baseball team is dead and I’m going to do something about it,”‘ Millis police detective Domenic Tiberi said.

Santafe also tried to call the coach at the elementary school where he teaches, but didn’t reach him, according to Tiberi.

Police and school officials locked down the town’s elementary, middle and high schools, barring anyone from entering or leaving until Santafe was arrested.

“We just live in an age now where you just can’t take these things lightly, and we’re just trying to protect everyone involved,” said Millis Middle School principal Andrew Zitoli.

Santafe was freed on $500 bail following his arraignment in Wrentham District Court on charges of assault with intent to commit a felony and threats to kill.