This undated photo made available by the Baton Rouge Police Dept. shows police officer Matthew Gerald. Gerald, 41, was killed by a gunman in Baton Rouge, LA., Sunday, July 17, 2016. (Baton Rouge Police Dept. via AP)

Wife of slain Baton Rouge officer announces pregnancy

The wife of an officer killed in a lone gunman’s ambush in Baton Rouge in July has announced that she’s pregnant.