( CNN ) A man crashed through the gates of a Michigan Coast Guard station around 6 a.m . ET on Sunday , assaulted personnel and said he had a bomb in his truck , authorities said . No Coast Guard officials were injured in the incident in Grand Haven , said Petty Officer Christopher Yaw , a spokesman with the Ninth Coast Guard District . The city is on the eastern shore of Lake Michigan , about 36 miles ( 58 kilometers ) west of Grand Rapids . According to Yaw , a man called saying that he had put a bomb in his truck . Coast Guard officials notified the command center for the Lake Michigan sector while ordering that all people be evacuated from the station , he said . After driving through the gates and parking his truck , the man `` gained access to the station building , '' Yaw told CNN but provided no further details . He said the man , who authorities said is 34 , was confronted , subdued and turned over to the Grand Haven Department of Public Safety . Officials are continuing to search the grounds , and an explosives ordnance team is working with the Federal Bureau of Investigation and the Bureau of Alcohol , Tobacco , Firearms and Explosives , Yaw said . The incident was initially investigated as a possible `` domestic act of terrorism , '' said Erin Von Tom of the Department of Public Safety . But no link to terrorism or a terrorist organization has been found , she said . Residents of a nearby condo complex were told to stay in their homes but were later allowed to leave . CNN 's Julia Talanova contributed to this report .
No explosives are found after a man drove through the gates at the Grand Haven Coast Guard station , authorities say . Authorities say the man assaulted Coast Guard personnel and said he had a bomb in his truck .