A 15-year-old boy has been arrested on suspicion of having a gun in Lurgan,.
He was detained after police searched a house in Bell’s Row Court on Tuesday afternoon.
He has since been released on bail pending further enquiries.
Police said they returned later in the afternoon, accompanied by NIE staff, to inspect the electricity supply due to suspicions it had been tampered with.
There was disorder at the scene and a man is due to be interviewed by police.
The concerns about the electricity supply had emerged during the earlier search of the property.
The investigation is ongoing.