ST. LOUIS (KMOV.com) -- People across the bi-state area are coming together to support the two daughters of a man killed in downtown St. Louis Friday.

An early Friday morning shooting claimed the life of 38-year-old Mark Schlemmer of Collinsville. He was taken to a hospital and died from his injuries on Saturday. 

His daughter, who recently turned 18, is now left to make decisions way beyond her age. 

"I wanted his heart to be beating inside someone else," Sierra Schlemmer said.

Mark Schlemmer with two daughters in white

Mark Schlemmer signed up to be an organ donor and Sierra Schlemmer was told she was in charge of making every necessary decision moving forward. Mark Schlemmer remains in surgery as his organs get harvested. 

Sierra Schlemmer said her father was a happy man with a constant positive attitude. That joy was stolen when someone fired a shot in the 700 block of North 15th Street and struck him. 

"He was definitely a goofball. Like very, very goofy," Sierra Schlemmer said. "Always kidded around."

WATCH: Loved ones come together to support two teen daughters of man killed in St. Louis shooting

"Mark was a good guy, cared about other people, really cared about his daughters," decades-long friend Lindsay Eversmeyer said.

Surveillance footage shows a white Chevy Malibu slamming into two parked cars and Eversmeyer believes someone inside the Malibu fired the shot that killed Mark Schlemmer. Eversmeyer said he was sitting at a stoplight when he was hit.

WATCH: Surveillance video captures moments after deadly shooting in downtown St. Louis

"I'm tired of hearing about all these shootings going on in St. Louis because I know St. Louis is a great city so it was tough to hear," Eversmeyer said. "And immediately I thought about his girls."

Sierra Schlemmer is now struggling to stay strong for her younger sister. 

"[My sister} was like a mini him, they were like best friends," Sierra Schlemmer said. "They thought the same. They look alike. They were like really, really close."

A GoFundMe page was set up to support Schlemmer's two teenage daughters.

"It's going to go toward, you know, the 18-year-old is getting ready to go to college and then there is the younger one," Eversmeyer said. "It's going to help them with funeral expenses and whatever else they need to pay off."

Copyright 2019 KMOV (Meredith Corporation). All rights reserved

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