The Montreal Police Department internal website has been hacked again.

Investigators say the names, positions and telephone numbers of several hundred department employees have been stolen.

The investigation into who is responsible involves Montreal police, the Sûreté du Québec and the Canadian Security Intelligence Service.

Officals say the hack came with a warning referring to the upcoming Education Summit.

It's the second security breach in the past few months.

La Presse is reporting this morning that the Policemen's  Brotherhood is concerned the hack may have placed officers in danger and says the union has complained before about the lack of cyber security within the department.