A Porter Airlines plane sits at Halifax Stanfield International Airport early Monday. ((CBC))

Transport Canada officials are investigating a "minor" collision between a Porter Airlines plane and a service vehicle at the Halifax airport.

The crash happened shortly before 9 p.m. Sunday as Flight 259 was approaching Gate 14 after arriving from Ottawa.

Porter CEO Robert Deluce said the plane was moving slowly when it struck the vehicle and no one was hurt.

"It was a relatively minor thing, but not something we obviously like to have happen under any circumstances," he told CBC News.

Deluce said he's waiting for transportation investigators to determine exactly what happened.

"Normally, that equipment is in fairly specified positions that don't allow it to come in contact with the aircraft," he said. "I really don't even want to speculate whether the equipment wasn't where it should have been or whether there were any other issues."

Deluce said the plane's nose cone and a propeller were damaged.

He said some passengers who were carrying on to St. John's left on a later flight, while others stayed in Halifax overnight.

The plane was still sitting at Gate 14 early Monday, leaving Halifax Stanfield International Airport with one less gate.

The gate was back in operation by noon.