Rutgers quarterback Philip Nelson, who transferred from Minnesota earlier this year, was jailed early Sunday on suspicion of assault in an incident that left another football player in critical condition.
A police statement said officers came across Isaac Dallas Kolstad, 24, of Mankato, while patrolling the city's downtown entertainment district around 2 a.m. The 20-year-old Nelson was arrested at the scene and taken to the Blue Earth County jail, the statement said.
Kolstad is listed in critical condition, according to multiple reports.
Police are requesting felony charges of third-degree assault, KTOE-AM reported.
Nelson, 20, played two years at Minnesota and started nine games last season before announcing in January that he would transfer. He participated in practice at Rutgers this spring and is set to sit out the 2014 season because of NCAA transfer rules.
He played in 11 games last season, but said Rutgers offered a more pass-friendly offense. He completed 50.5 percent of his passes for 1,306 yards with nine touchdowns and six interceptions last season. He also rushed for 364 yards and six touchdowns while sharing quarterback duties with Mitch Leidner.
Rutgers said in a statement that it is in the process of gathering information about the incident. Nelson likely will be arraigned Monday or Tuesday.
Nelson was a star at Mankato West High School, where he was both Minnesota's Mr. Football and The Associated Press Player of the Year in 2011.
Kolstad was taken to Mayo Clinic Health System in Mankato. He graduated from Mankato East and spent two seasons at North Dakota State in 2008 and 2009, did not play in 2010, then transferred to Minnesota State for his junior and senior years. He started all 12 games last season and finished third on the team in tackles with 59.
Police were looking for a second suspect.
"It's an ongoing investigation and as more information becomes available we'll be releasing it," city spokeswoman Shelly Schulz said.
A phone message left by The Associated Press at a number listed for Nelson's parents in Mankato was not immediately returned.
"We are in the process of gathering information on the situation and reserve comment until the legal process is complete," Rutgers athletics spokesman Jason Baum said in a statement.
Information from The Associated Press was used in this report.