PRUDHOMME, Sask. -- Residents in a rural Saskatchewan community are out of their homes for a second time due to a fire at a natural gas pumping station.

There were no injuries reported when an explosion Saturday started the fire at a TransGas facility near Prud'homme, a village northeast of Saskatoon.

Spokesman Dave Burdeniuk says there was a set-back in controlling the fire this morning, when a wellhead failed and caused a larger flame to burn.

He adds that the wellhead was heat-damaged after enduring intense flames over the weekend and its failure was a known possibility.

Burdeniuk says four families located within two kilometres of the site will be out of their homes for the rest of the day.

He says the incident followed a 60-hour process to turn off the primary gas source feeding the flames.