It's not yet clear if the level rail crossings in Barrhaven have been tampered with but Ottawa Police are continuing an investigation they launched Friday to find out.
They were called by VIA Rail and the Ministry of Transportation after two people were seen walking toward a transistor box.
That followed weeks of malfunctions with the advanced warning signals at the level rail crossing at Fallowfield and instances at the crossings at Strandherd and Jockvale.
RailTerm staff are stationed permanently at the Fallowfield crossing.
Investigators in the Ottawa Police West Division say they're working with CN Police as they investigate - counting on their expertise in knowing the equipment and its usual functions.
It's not yet known if there was, in fact, tampering with the lights at the Fallowfield Crossing, or at any other.
Police say if they find there WAS they'll then work to track down the people responsible.