Senate President, Senator David Mark says the current security challenge confronting the nation has reinforced the need to aggressively implement the war on terrorism.

Senator Mark made the remark during his visit to Saint Theresa’s Catholic Church, Madalla Niger state where explosions killed scores of worshippers on Christmas day.

Senator Mark said Nigerians cannot be scared from freely going about their legitimate businesses, adding that the national assembly would play its part to unearth the masterminds of the terrorist attacks.

Also former President Olusegun Obasanjo visited the church to condole with the parishioners.