Karachi - Three blasts and a hand grenade attack targeted within hours secular political forces in different parts of Karachi, killing at least four people and wounding 41 others on Saturday, the four consecutive day of election related violence that has put in further doubt on time holding of polls in the largest city of the country.

Besides these attacks in Qasba Colony, Orangi Town, Lyari Town and Liaquatabad Town targeting MQM and PPP election activities, two people were killed in firing by unidentified terrorists in Layari area of the port city, which is also the commercial hub of Pakistan.

The Tehrik-e-Taliban has claimed responsibility of recent attacks on the leaders and workers of Muttahida Quami Movement (MQM), Pakistan Peoples Party (PPP) and Awami National Party (ANP) – the former ruling collation allies – vowing to stage more attacks on these ‘secular’ parties.

As many as 26 people have been killed and more than hundred wounded in at least six such acts of terrorism this week alone. The MQM on the other day observed the second day of mourning against the consecutive attacks on its election offices.

On Saturday, militants used a handmade low intensity bomb to target the 132 Unit Office of MQM in Orangi Town. Only five minutes later terrorists struck Ali Imambargah in Qasba Colony. The third blast occurred in the Kumaharwara, Lyari, where a PPP corner meeting was going on.

During the same time, unknown militants hurled a hand grenade at another Unit Office of MQM in Gulbahar neighbourhood of Liaquatabad Town but no was hurt luckily. The police also found a bag carrying explosives, detonators and batteries in the same area.

No causalities were reported in the Orangi Town attack, but Qasba explosion left two dead and wounded 27 others. The PPP meeting attack also killed two people and wounded 14 others, including PPP candidate for NA-249 constituency, Adnan Baloch.

Following the blasts emergency were declared in all city hospitals. Police Surgeon Aslam Phechu told The Nation that body of Aslam Rafiq and 20 injured were taken to the these hospitals from Qasba Colony while 10 victims were brought from Lyari. A man named Kamran and five-year old girl Muskan succumbed to injures during treatment. Seven out of the 20 wounded brought to Abbasi Shaheed Hospital were highly critical while four out of the 10 at the Civil Hospital were also in critical condition.

At least eight shops were completely destroyed while seven shops, the Imambargha and six vehicles were partially damaged in Qasba Colony explosion, which also shattered the windowpanes of nearby houses. Rescuers and law enforcement agencies rushed to the blast sites and shifted the victims to the Abbasi Shaheed and Civil Hospital.

DIG West Zafar Abbas Bukhari said an improvised explosive device (IED) containing ball bearings and placed on a pick-up van was detonated with a timing device. Experts of Bomb Disposal Squad said half Kg explosive material was used in Orangi Town blast while the Qasba bomb weighed almost four kilograms. Lyari Police said that a three Kg bomb fixed on a motorbike was exploded with remote control in the area.