A Porter Airlines flight out of Ottawa had to perform an evasive maneuver at 9,000 feet to avoid a mid-air collision near Toronto at about 7:30 this morning.

The Transportation Safety Board says the aircraft was approaching Billy Bishop Airport for landing when an unidentified object was spotted in its path.

It may have been a drone, but that hasn't been confirmed.

"(The pilots) could either climb, turn or get underneath," TSB Senior Regional Investigation Peter Rowntree told CFRA's Ottawa Now with Evan Solomon. "In this case, the flight crew tried to get underneath."

"They only had a couple of seconds."

Two members of the cabin crew were hurt as a result.

Their injuries are considered minor.

54 passengers were on board.