AN 18-YEAR-old is being held on suspicion of murder after a house fire left four dead.

The teenager, from Lytham, Lancashire, was arrested following the fire last Saturday evening.

Police confirmed today the fire was started inside a wardrobe in one of the bedrooms at the house on Lytham Road, Freckleton.

Four people, Reece Smith, 19, four-year-old twin girls Holly and Ella Smith and Jordan Smith, two, were killed in the blaze.

Detective Chief Inspector Neil Esseen, from Lancashire Police, said: "I can confirm that this fire is now being treated as suspicious. We are following a number of lines of inquiry and have spoken with a number of people who were at the house on the night in question.

"However, I would still urge anybody who has any information which they believe could assist us with our investigation to come forward."