They are accused of kicking and punching another TCU student and stealing a case of Keystone Light beer. The alleged incident occurred Sept. 4.
A TCU spokesman said Tuaua has been suspended from the program.
Tuaua, a senior, had not played in TCU's past two games. He started five games for the Horned Frogs last year and was expected to play a big role in 2015.
The Horned Frogs already were without five defensive starters due to season-ending injuries. Tackle Davion Pierson, their most experienced defender, has not played this year due to a head injury.
TCU travels to Texas Tech this weekend.
TCU DE Tuaua arrested, allegedly struck student
ESPN Big 12 reporter Jake Trotter discusses the arrest of TCU DE Mike Tuaua for an alleged attack on a fellow student and how it impacts Tuaua's future with the team.