Montreal police have arrested a fifth officer in relation to an internal investigation that started in December 2015. Authorities arrested the individual without a warrant, citing “reasonable probability” that a criminal act had been committed.

The officer’s identity is not being released, as charges have not been laid.

The individual has been suspended without pay. On July 7, Montreal police arrested four officers following irregularities that were found in the division that takes care of informants.

Of those arrested, David Chartrand faces four charges and Faycal Djelidi faces nine, including perjury and obstruction of justice.

Djelidi faces additional charges of solicitation, paying for sexual favours and breach of trust.

The identities of the other two officers have not been released.