Unidentifiable gunmen bombed early Tuesday a natural gas pipeline that led to an industrial zone south of Al-Arish, in Egypt’s troubled Sinai Peninsula.

This is the 22^nd time the pipeline has been bombed since Mubarak’s ouster. No injuries were sustained in the bombing, but Al-Ahram reported that flames could be seen bellowing out of the ruptured pipeline.

A pipeline 50 kilometres south of Al-Arish was bombed twice in two days, on 10 and 11 February. The frequency of bombings targeting natural gas pipelines that run to industrial areas in both Sinai and Jordan increased significantly since the beginning of the year.

The last bombing of this sort was 26 February. Ansar Beit Al-Maqdis, an Al-Qaeda-inspired militant group operating in the restive peninsula, had previously claimed responsibility for bombings of this nature.