A suspect is in custody after making bomb threats to nine Royal Oak churches Friday afternoon, police say.

The churches received the threats via email and immediately contacted Royal Oak police. The department, with the assistance of the FBI, arrested a 33-year-old Royal Oak man, who has not been named by police.

The nine churches are:

First Congregational Church ,1314 Northwood

St. Mary’s Catholic Church, 730 S. Lafayette

Calvary Christian Church, 2203 E. Eleven Mile

Unity of Royal Oak, 2500 Crooks

Central Oaks Church, 2005 Rochester

Royal Oak First Methodist Church, 320 W. Seventh

Woodside Bible Church, 3620 Rochester

Starr Presbyterian Church, 1717 W. Thirteen Mile

St. John Episcopal Church, 26998 Woodward

An investigation is ongoing.

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Contact reporter Omar Abdel-Baqui: 313-222-2514 or oabdel-baqui@freepress.com. Follow him on Twitter @omarabdelb