A shocking Facebook page which mocks the fate of four men killed in a mining disaster in Wales is under investigation.

Police have received numerous complaints from outraged members of the public calling for action to get the page taken down.

It was also condemned as "thoroughly sick" by an official with the National Union of Miners who urged police to take swift action.

Called "I'm really sad for those four miners. LOL j/k, they were Welsh," the sick site appears to be largely the work of one person.

It takes the form of an on-line hate campaign targeting the Welsh with racial slurs and trivialising the tragic deaths.

One posting on the site states: "I just wish more miners had died", and jpins other slurs and jokes intermingled with tasteless images. The online attack comes while the pain of bereavement is still raw for the families involved and the mourning process barely under way.

Church services took place across south Wales to pay tribute to the memory of the miners who lost their lives.

Phillip Hill, 45, Garry Jenkins, 39, David Powell, 50, and Charles Breslin, 62, died when water engulfed Gleision Colliery near Pontardawe.

All four died instantly in all likelihood as flood water sped through the tunnel in which a team of seven men were working. Of three others who escaped one remains in a critical condition in hospital.

A spokesman for the South Wales Police confirmed that a significant number of complaints about the site had been received and it was now under investigation.