BY DINESH RAMDE

Associated Press

BROOKFIELD, Wis.

--A man police suspected of killing three and wounding four by opening fire at a tranquil day spa was found dead Sunday afternoon after a six-hour manhunt that locked down a shopping center, country club and hospital in suburban Milwaukee.

Authorities said they believed the shooting was related to a domestic dispute. The man they identified as the suspect, Radcliffe Franklin Haughton, 45, of Brown Deer, had a restraining order against him.

Brookfield Police Chief Dan Tushaus said Haughton died of a self-inflicted gunshot wound and was found in the spa. Authorities initially believed Haughton had fled and spent much of Sunday looking for him.

The shooting happened about 11 a.m. at the Azana Day Spa, a two-story, 9,000-square-foot building across from a major shopping mall in Brookfield, a middle-to-upper class community west of Milwaukee. Hours later, a bomb squad descended on the building, and Tushaus said an improvised explosive device had been found inside. It was not clear whether it remained a threat.

Shortly before authorities said Haughton's body had been found, his father, Radcliffe Haughton Sr., told The Associated Press and a television station in telephone interviews from Florida that he had last spoken to his son a few days ago, but had no idea anything was wrong.

Tushaus said officers initially focused on reaching and helping the victims. The victims' names were not released by authorities, and the hospital treating them was temporarily locked down. Staff members were being escorted into the building, and critically injured patients were accepted with a police escort.

Officers were stationed at all main entrances to the facility. A sea of ambulances and police vehicles collected at the scene shortly after the shooting.

Online court records showed a temporary restraining order was issued against Haughton on Oct. 8 because of a domestic abuse complaint. Haughton appeared in court Thursday, when a no-contact order was issued and he was told to turn over all of his weapons.

It was not clear who sought the restraining order, but he was reportedly married.

It was the second mass shooting in Wisconsin this year. Wade Michael Page, an Army veteran and white supremacist, killed six people and injured three others before fatally shooting himself Aug. 5 at a Sikh temple south of Milwaukee.