The Grand Rapids Police Department is conducting a death investigation in the 600 block of Letellier SW. Officers were called at approximately 12:20 pm, following a report of an unresponsive male on the ground not breathing. When officers arrived, they located a 54-year-old male with blood on his face. The cause of death is unknown at this time, pending an autopsy. The victim’s name is being withheld until family notification can be made.