Six people arrested during an intelligence operation into dissident republican activities in the North have all been released without charge.
The six were being questioned by detectives after a raft of searches across Co Armagh which saw the cross-border rail link partially shut down for almost two days.
Four of the men were arrested on Thursday night after being stopped in a car on the Antrim Road, Lurgan. Police came under attack from stone throwers during follow-up searches on houses and the railway line close to the Cornakinnegar Road in the town.
Police later arrested another two people, one in Lurgan and one in nearby Craigavon.
A section of the Belfast to Dublin railway line between Lisburn and Portadown re-opened late this afternoon after being closed on Thursday night as part of the search operation.
All six people arrested were taken for questioning to the Police Service of Northern Ireland's serious crime suite in Antrim.
They were all released last night, the PSNI confirmed.