A top Nigerian military source has confirmed that drones are presently patrolling Nigeria's borders with Tchad, Niger and Cameroon in search of Boko Haram militants who are alleged to be re-grouping for new violent attacks.The source added that there are credible intelligence reports that the sect is taking advantage of Nigeria’s porous boundaries to sneak weapons and other accessories into Nigeria."There are now serious drone patrols here in Sokoto State on air and other means of security surveillances ongoing. And most especially across the borders. Nigerian Air Force, Nigerian Army and other operatives are in here."Another military source also told SaharaReporters that the multinational forces have arrested suspected Boko Haram members sneaking into Borno State.The source did not reveal if the drones belong to the Nigerian government or the US.