Pakistan, Feb. 19 -- The Counter Terrorism Department (CTD) of the Sindh police, on Monday, declared the car explosion in Karachi's Defence Housing Authority (DHA) an 'A-Class' case and admitted its failure in arresting the men responsible.

In its report submitted before an Anti-Terrorism Court (ATC), the CTD officials said that the terrorists were planning a terrorist attack in the city by planting a bomb device in the vehicle and had now gone into hiding.

The CTD report said that the police had tried its best to arrest the culprits, further adding that the case will be re-opened as and when an accused will be arrested.

According to CTD officials, a car parked at an empty plot near Khadda Market, Defence Phase-V, exploded in the early...