One man has died and another has been seriously injured after a climbing accident in Snowdonia, north Wales.

The 25-year-old man was pronounced dead at Ysbyty Gwynedd in Bangor following a 400ft fall.

Another climber - a 32-year-old man - was also hurt in the fall. He has head injuries and his condition is described as serious.

Both men are from the Stoke-on-Trent area.

A North Wales Police spokesman said the pair were climbing on hard-packed snow on a steep slope at Banana Gully near the 3,000ft peak of Y Garn in Snowdonia.

They were airlifted to hospital by an RAF Valley rescue helicopter after a joint rescue effort with the Ogwen Valley mountain rescue team.

A spokesman for the mountain rescue team said the two men were not adequately equipped for the climb.

Chris Lloyd said neither of the men was wearing a helmet and only one of them was wearing crampons. They were not roped together.

Mr Lloyd said 21 volunteers from the Ogwen Valley team were involved in the rescue attempt.

He said the pair had just about scaled the gully, when the accident happened. The man wearing crampons slipped first, and when his companion turned to see what had happened, he also fell.

The climb the men were attempting is classed as a Grade 1 climb - not technically difficult.

Police said the two men were thought to be experienced climbers and had ventured up the mountain alone rather than with a mountaineering group.

Relatives of the dead man were expected to travel to Wales on Sunday night to formally identify his body.