Four teenage boys hospitalised in Derry after taking unknown substance

Altnagelvin HospitalFour teenage boys have been treated in hospital in Derry after taking unknown substances.

Police are trying to establish what the boys took before they were admitted to hospital on Wednesday night.

Three boys are in a stable condition at Altnagelvin Hospital. Details on the other boy have not been released.

"In general, our advice is that any drugs or medication taken without medical advice can be harmful," a police spokesperson said.

"If anyone does become ill, they should seek medical attention immediately."