A 21-YEAR-OLD woman is critically ill in hospital and another has been arrested following an early morning incident in Swansea.

Emergency services were called to the incident in Rosehill Terrace, Mount Pleasant, early on Tuesday, March 23.

A spokesman for South Wales Police said: “We were called to an incident at Rosehill Terrace, Mount Pleasant, at 6.43am.

“A 21-year-old female has been arrested on suspicion of supplying drugs and is in police custody. A 21-year-old female is currently in critical condition in Morriston Hospital”.