My then boyfriend (now husband) was arrested 2/28/2011 for what is now still a pending domestic violence case with his ex-wife. Apparently, after the alleged incident he tried to commit suicide by drinking bleach. He called his best friend to say goodbye and tell him why he drank the bleach, and his friend talked him into going to the hospital and that it wasn't worth dying over. He went to the hospital and checked himself in saying he "had poisoned himself". They gave him a bucket to throw up in while they waited to get him into triage. Before he could get in, an officer saw him through a window and motioned him to come outside. He wasn't trying to get in trouble so he went out and the officer arrested him on the spot. He tried to tell him why he was there, but the officer wouldn't listen and brought him back to the station to book him. While being there he finally got them to listen about the poisoning of himself, to commit suicide, and that is the reason why he was there. They then informed him his ex-wife had been brought there too and that is why they had believed he was there, but they never even tried to find out from the hospital why he was there. They eventually (2 hours later) brought him back to the hospital where he was treated for attempted suicide and brought to a mental facility until he was cleared to be stable for release. Is it illegal to coax someone who is seeking medical attention out of an emergency room and arrest them without finding out why they are there? Is this considered inproper arrest? Is there anyway to handle this legally? is it illegal?

Optional Information:
Country relating to Question: United States
State (if USA): New Jersey

Already Tried:
To report to police dept. they sent to county for investigation and the officer was not charged. Investigation was kind of laughed off since his ex-wife's brother-in-law is the head of internal affairs.