Help Matthew Makaiwi rest in peace

Im trying to help my son Matthew Makaiwi who was found dead in marina on 5/26/2023 behind grocery outlet who just turned 21 be laid to rest. There is a investigation in progress of what happened. Matthew was a kind and loving person who had a difficult life at an early age but still cared about his family and loved ones and even strangers. He has 5 other siblings who carry a part of his legacy and love. I know times are hard for everyone and i would appreciate any help so matthew can rest in peace. My family and i thank you for anything you can do to give him a peaceful resting place. Our thanks and love to anyone and everyone who can help.