NELSON TOWNSHIP, Mich. (WZZM) -- Investigators hope surveillance photos will lead to clues in the murder of a Grand Rapids man found last week in Northern Kent County.

Steven Day, 54, was found by a passing driver along 16 Mile Road and Myers Lake Ave. NE on December 18, 2013. The driver told Kent County Sheriff's Deputies he initially believed the body was a dead deer on the side of the road.

Surveillance photos show Day was wearing a backpack before he was killed. Detectives say the backpack and some of his clothes are missing and may have been thrown in a dumpster or out of a vehicle.

Friday night we talked with a friend of Steven Day. Jason Green also lives at Verne Barry Place Apartments, where Day also stayed. It'sa low income housing developmentnear thecorner of South Division and Fulton Street.Greensays Day was never seen without his backpack or his 10 speed bicycle. "He was a nice guy everyone has problems he has his problems same here but I try to be his friend."

Green says Day had two baskets on his bike, and carried a pole to dig-up recyclables. When we asked if he might have had a lot of money on him, Green said that wasn't likely. He says Day usually only carried the money he needed for the day.

Detectives are asking for anyone with information on a found backpack and clothing or Steven Day's activities just prior to the homicide to call Det. Justin DeBoode at (616) 632-6130 or Silent Observer at (616) 774-2345.

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Two men, Robert McCombs and Roger Musick, were arrested in connection with Day's death, however the Kent County Prosecutor declined to file murder charges against them and they were released.