A former children's hockey coach already facing charges of sexually assaulting an 11-year-old boy has now been charged with more than 30 counts of sexual offences involving 11 alleged victims.

Last month Ottawa police charged Kelly Jones, 57, of Ottawa, after an investigation in March into allegations he had sexually assaulted a boy between 1987 and 1991. The boy was allegedly assaulted from age 11 to 15.

Police charged Jones with sexual assault, sexual interference, invitation to sexual touching and sexual exploitation of a young male.

Since that time, police said more people have come forward.

On Wednesday police laid more than 30 additional charges, including sexual assault, sexual interference, invitation to sexual touching and sexual exploitation and intimidation.

The charges relate to multiple incidents going back decades. They involve 11 alleged victims in total, who ranged in age from 7 to 15 years of age at the time, police said.

In addition to coaching various hockey teams at the children's hockey level, Jones was also a baseball coach, police said.

Police are asking anyone with information about the alleged incident or other incidents to contact Ottawa police at 613-236-1222, ext. 5944, or phone Crime Stoppers at 613-233-8477.