3 arrested in death of 70-year-old Milwaukee man found inside burning home

Three people have been arrested in connection with the death of a 70-year-old man found tied up inside a burning home on Milwaukee's south side, police said.

Robert A. Piotrowski was discovered in the early hours of July 3 inside a duplex on S. 28th St. near W. Becher St.

Authorities said immediately they were treating his death as a homicide and confirmed this week that it was homicide.

DATABASE: Milwaukee Homicide Victims

Piotrowski was found with "several physical injuries" and was "bound," or tied up, inside the home, a police spokesman said. No further information was released.

Two men, ages 22 and 24, and a 23-year-old woman were arrested and will be referred to prosecutors, police said.

The fire, which police described as arson, was reported about 2:20 a.m. July 3. 

A service for Piotrowski took place Friday and his family has requested memorials to Habitat for Humanity of Wisconsin or the Wisconsin Humane Society, according to his obituary.