One person was killed and 50 others injured in a series of seven blasts that ripped through different areas of the busiest city of country on Monday. Two explosions occurred here in Banaras area. One of the blasts happened in a pile of garbage while the other one at a footpath near Banaras chowk, injuring 16 people. They were shifted to Abbasi Shaheed Hospital, sources said.Enraged people took the streets and started pelting stones at moving vehicles.The third explosion ripped through a mini truck in North Nazimabad area of Shahra-e-Noor Jehan near Sohail mosque. Five persons were injured, police sources said. However, Chhipa sources said 8 persons were taken to hospital.There are reports of the fourth blast in Hyderi area near a children's school. Police mobiles have reached the blasts's sites while ambulances are shifting the injured to local hospitals. The fifth blast occurred here in a motor cycle in Qasba colony area, killing one person. A policeman was injured in the sixth blast in a bicycle in Manghopir. Two blasts also occurred in Pak colony in which 7 persons are reported injured. Police has not come up with any statement confirming the above blasts. Police and Rangers have been put on high alert in the city following the series of blasts.