Do you know these men? Police are searching for four individuals in connection with an assault and robbery downtown Grand Rapids Sunday night, March 17.

The GRPD have released a video of the incident, which happened in the area of Ionia Avenue and Cherry Street SW.

WZZM 13 reports that witnesses say a man punched the victim in the face and another man picked up what is believed to be the victim's cell phone.

Officers found the victim unconscious. He has been hospitalized and is suffering from life-threatening injuries.

Police are asking anyone with information to contact GRPD's Det. Lewis at 616-456-4469 or Silent Observer at 616-774-2345.