Police are looking for a man recently released from prison as a person of interest  in last week's murder of a Duluth man.

Donald Singer, 57, was found dead inside his garage by his daughter who became concerned when she hadn't heard from him in several days.

Singer's bloody body was found underneath a blanket and towels with a ladder place on top.

His 1988 red Porsche 944 was also missing from the residence.

Capt. Mark Hunter with Duluth Police tells WSB's Sandra Parrish they received tips that 52-year-old Robert Craig Sandman had been spotted with Singer's car.

"The vehicle is still missing, however, we have evidence to support the fact that Mr. Sandman was in possession of the vehicle," he says.

Warrants have been issued against Sandman for theft by taking while the homicide investigation continues.

Sandman was released from the Georgia Diagnostic and Classification Prison on March 22, just days before Singer is believed to have been killed.

WSB has learned Sandman was convicted in March 2012 of aggravated stalking involving his ex-girlfriend as well as two charges of theft.  He was sentenced to 10 years in prison, but it's not clear why he was released early.

Police say Sandman's ex-girlfriend lived in Singer's neighborhood.

Hunter says Sandman is believed to have connections to northwest Georgia, possibly Adairsville or Calhoun.