Investigators are looking into another complaint about Calgary's 911 call centre. This one involved a child and a male intruder.

The 911 call came from the Chinook School of Music. A 10-year-old girl was in the hallway on her way to the bathroom, when she was approached by a man who exposed himself. She screamed and ran for help.

An employee called 911 to report an intruder in the building approaching children. 911 asked if it was a life or death situation. When the caller said no, 911 told them to hang up, and call a non-emergency police line. According to their own rules, the 911 operator should have asked if there was a crime in progress and dispatched police immediately.

From the time the initial 911 call was made, it took police an hour and 45 minutes to get to the scene.

Police confirm this call is now being investigated as part of a larger review of policies and training at the 911 centre.

"It makes it that much more difficult to catch the offender, and as a result, we've had to launch an extensive investigation," said CPS Acting Supt. Kathy Grant.

The Calgary Police Association President, John Dooks, says this is the fourth in a series of problem 911 calls, and it says enough is enough.

"Whether it's officer safety or public safety, these are identifiable mistakes that we can prevent, especially when it involves a child, it makes it that much more tragic," said Dooks.

The most serious incident involved the stabbing of two police officers on June 1st. It took police and EMS three times as long as it should have to get to the side of the critically injured officer.

CTV News made calls in to the board investigating the 911 centre about the latest allegations. So far, our calls have gone unanswered. The results of the review are expected to be released next week.