FERGUSON, Mo. — A grand jury has reached a decision about whether to indict a Ferguson police officer in the shooting death of Michael Brown, a spokesman for St. Louis County’s top prosecutor said Monday.

The panel has been considering charges against Darren Wilson, the white suburban St. Louis officer who fatally shot the black 18-year-old after a confrontation in August.

In a brief email to reporters, spokesman Ed Magee said the decision would be announced later Monday. He offered no immediate details.

The prosecutor’s office has told Brown’s relatives that the decision will be made public after 5 p.m., family attorney Benjamin Crump said.

Missouri Gov. Jay Nixon was traveling to St. Louis from the Capitol on Monday afternoon, spokesman Scott Holste said, but did not say why.