Simultaneouly, soldiers laid siege to Oporoza community, Warri South-West council area of Delta State, suspected to be the hideout of wanted ex-militant, Government Ekpemupolo alias Tompolo.
The troops arrested seven suspects and recovered explosives, arms and ammunition.
There is suspicion in security circles that the NDA is working for Tompolo who has repeatedly denied the claim.
Attacked at 2.15am yesterday were Nembe 1, 2 and 3 Brass to Bonny Trunk lines belonging to Aiteo, the latest by the group on targets in the oil and gas sector of the economy.
Aiteo acquired the 100kn Nembe trunk line from Shell Production Development Company (SPDC) in 2014 but Shell still uses it to convey crude to its Bonny Export Terminal.
The militants, who accessed the locations of the pipelines in speedboats, reportedly blew up the trunk lines with the aid of dynamites.