Pineda is being held on $1 million bail and is scheduled to be arraigned Sept. 2.
Pineda was an assistant instructor at a martial arts school in Fullerton. He was also a soccer coach for the North Orange County Youth Soccer Premier League.
More recently, he coached the Fullerton Eagles Team, which would meet for practice at Woodcrest Elementary School in Fullerton and Sycamore Junior High School in Anaheim.
Anyone with additional information is asked to contact the Anaheim Police Department at (714) 765-1972 or (714) 347-8794.