Media playback is unsupported on your device Media caption Part of the cylinder smashed through the window of an office

Three people have been hurt in a gas cylinder explosion at a scrap metal recycling plant in County Antrim.

It happened at the T-Met recycling plant in Mallusk at about 10:00 BST.

John McPolin from the Ambulance Service said it was believed the blast happened when a digger crushed a gas cylinder.

He said part of the cylinder was propelled about 150 yards, smashing though a window of a room with three people inside. They sustained minor injuries including cuts and bruises.

Mr McPolin said the three people in the room had a "very, very lucky escape".

He said the piece of gas cylinder flew past several other buildings before smashing into the room.

It narrowly missed a young woman who was sitting close to the window, before it hit the ceiling of the room and came to rest on a desk, the NIAS spokesman added.

One of the people in the room was treated by ambulance staff at the scene while the other two were brought to the Mater Hospital in Belfast.

Police were also called to the scene and described those injured as "walking wounded".

The Health & Safety Executive is leading the investigation.