By Sebastian Murphy-bates and Keiran Southern For Mailonline
Published: 17:32 GMT, 1 March 2018 | Updated: 17:53 GMT, 1 March 2018
A young child has become the fourth victim of the fatal house fire in Fermanagh, police said.
Post mortem examinations will take place to positively identify the victims of Tuesday's early morning blaze.
A man aged 27 is being questioned on suspicion of murder after he was detained at the scene in Derrylin and taken to hospital for treatment.
A young child has become the fourth victim of the fatal house fire in