GRAND RAPIDS, Mich. — The Grand Rapids Police Department said they used "extra caution" Tuesday afternoon while they negotiated with a 19-year-old man who was threatening to harm a 5-month-old. 

Around 2 p.m. officers responded to a home on Watkins Avenue SE near Kalamazoo Avenue SE when a woman called police saying her ex-boyfriend was in the house with her baby, violating a court order. 

GRPD officers tried to make contact with the man who they said was "highly agitated and threatening to kill the baby." While negotiators talked to the suspect, he started damaging the house, breaking all the windows and creating holes in the walls. 

Police eventually learned that the suspect might have a gun and they gathered information about the "mental instability" of the suspect. 

The streets near the house were shut down while police continued to negotiate. 

After about two hours, the man surrendered himself to police with the uninjured baby in his arms. 

The scene was cleared Tuesday evening, but detectives are continuing to investigate. Police say it's too soon to determine what charges will be pursued. Doctors will examine to baby to make sure there are no injuries, and the man will receive an mental evaluation. 

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