UPDATE from WZZM reporter Meghan Bunchman:

UPDATE: No explosive device found in truck at Grand Haven Coast Guard station; station safe. No link to terrorism/terrorist organization

— Meghan Anne Bunchman (@MeghanBunchman) February 8, 2015

Police say a Sunday morning “attack” on the Grand Haven, Michigan Coast Guard station is being investigated as an act of “domestic terrorism.”

The Grand Haven Department of Public Safety reports a man “crashed his truck through the gate at the Coast Guard station and assaulted U.S. Coast Guard personnel,” according to WOOD TV.

During the incident, which occurred at 6 a.m., the man broke into the station and threatened he had an explosive device in his truck.

Police robot at Coast Guard station Grand Haven. Checking suspect's truck. @FOX17 pic.twitter.com/N08YsoQZ3l

— Chris Koops (@chriskoops) February 8, 2015

Coast Guard personnel subdued him and Grand Haven officers arrested him a short time later.

They “suffered minor injuries” and are “safe.”

Police say the man is not from the area.

“The investigation is expanding to areas outside of Grand Haven with assistance from the Michigan State Police and FBI,” the Grand Haven Tribune reports.

According to Mlive, additional law enforcement personnel and resources are heading toward Grand Haven to “secure the area.”

https://twitter.com/VNewsCD/status/564445188009902080

Here's a look at the Grand Haven Coast Guard building. You can see the truck that's being checked out by MSP. pic.twitter.com/CUa8DZvwrL

— Dillon Davis (@DillonDavis) February 8, 2015

Stay tuned for additional details…