Fourth arrest after mortar find

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A fourth man has been arrested in Derry by police investigating the discovery of four mortars in a van on the Letterkenny Road on Sunday night.

A PSNI spokeswoman said the 31 year old man has been arrested in Derry today.

“The suspect has been taken to the Serious Crime Suite at Antrim police station for questioning. Three suspects arrested on Sunday night remain in custody,” she said.