Investigators are trying to figure out who shot a 24-year-old man who showed up at a local hospital early Wednesday, March 8.

Grand Rapids officers were called to the hospital around 12:39 a.m. after a minivan dropped the victim off. He had been shot three times in the chest. He is in critical condition.

Two men and one woman seen walking away from that minivan were taken to the police station to be interviewed. No one has been arrested. Investigators also say they don't know where the shooting happened.

If you have any information on the shooting, call the Grand Rapids Police Department at 616-456-3400 or Silent Observer at 616-774-2345. You can also submit tips online.

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Matt Gard is the Senior Producer of the 13 Morning News. If you have a story idea, you can contact him on Twitter, @mgard_wzzm13 or by e-mail,