Friends and family in Mankato came together on Thursday evening to host a fundraiser for the former Minnesota State University football player left in critical condition following an altercation in downtown Mankato this month.
Both Nelson and Shelley face charges of first and third degree assault.
While Kolstad remains in critical condition, his medical expenses are piling up.
The fundraiser, held at Kolstad's employer Fastenal in Mankato has drawn a large turnout. Organizers set up a meal, a silent auction, activities and sold t-shirts all to help raise money for the family.
"They need all the support they can get," said Kolstad's former teammate Chris Schaudt to KEYC. "Support from community and family and friends from states and countries all over [is] coming in, it's really a beautiful thing."
Organizers had expected as many as 1,500 to attend, according to WCCO.
All of the money raised from Thursday's event and an online fundraiser will go to help pay for the family's medical expenses. Kolstad has a wife, a daughter and another daughter on the way.
Kolstad has undergone multiple surgeries. In one of those procedures, a portion of Kolstad's brain was removed.
While Kolstad remains hospitalized, the investigation into the incident continues.
The Mankato Free Press reports investigators are attempting to obtain surveillance videos from the bars to determine if Nelson, 20, and his 19-year-old girlfirend, Malorie Veroeven, had been served.
If either were served at one of the bars, the newspaper says that bar could face civil litigation.