QUETTA - Three people sustained injuries on Wednesday when an explosion occurred in a cold drink shop at Liaquat Bazaar the crowded area of provincial capital. The official sources said that some women had visited the shop located at Hari Kishan Road adjacent to Liaquat Bazaar and shortly after their departure the explosion occurred and injured three persons who were working at the shop. 'Three masked women came to the shop and ordered for cold drinks but after short interval they pretended to have emergency and left the shop. Following their departure a blast occurred at the shop, Mansoor Ali an injured told The Nation. Soon after the blast police and Frontier Corps personnel reached the site and cordoned of the area. The injured were shifted to Civil Hospital Quetta where condition of an injured Zahid Ali was stated to be serious. The blast damaged the shop and also smashed windowpanes of other nearby shops. According to officials of Bomb Disposal Squad, home made explosive device was used in the blast. Police has registered a case against unknown miscreants and started investigations. Meanwhile, Baloch Republican Army women wing claimed the responsibility of the blast. Moreover, Khuzdar police have arrested seven suspects in connection with recent roadside bomb blast that wounded five people in Khuzdar. Police sources said that during search in different areas seven people including Habibullah, Nadeem, Ahmad, Hamid Ali, Murad Bakhsh, Idress, Basit and Manzoor Ahmad were arrested. The suspects have been shifted to unspecified location for security reasons and were being interrogated.