Three Peel Regional Police officers have been suspended in connection with a months-long corruption investigation that led to the arrest of seven Toronto police officers and one retired constable earlier this week.

Peel police confirmed the suspensions Thursday, saying the officers were taken off duty pending further investigation by York Regional Police, which is leading the probe.

“No officers have been charged at this time,” Peel police Const. Tyler Bell-Morena said in a statement to CBC News. He declined to provide further details, including the names of the three officers, citing the need to protect the integrity of the investigation.

York Regional Police say the probe is ongoing and that investigators are still reviewing evidence seized during multiple warrant executions and arrests this week. They say it is too early to determine whether other police services are involved.