At least five people, including one in critical condition, were injured on Tuesday after an explosive device detonated here in Shireen Jinnah Colony, SSP South Sheeraz Nazeer said. According to the SSP, an initial investigation suggests that the bomb was planted in a cycle. He added that explosive material weighing a kilogramme, including ball bearings, was used in the explosion. “Looks like it was a homemade remote controlled or timed device,” said SSP Nazeer. He also said that the bomb was kept near a general store or a bus stop, and that the police is investigating who the target was. Bomb Disposal Squad (BDS) officials have been summoned at the crime scene to ascertain the genre of the blast. According to police investigators, the explosive material was likely to be planted at the bus terminal and passing by passenger bus came into its range. One among injured persons is in critical condition due to serious injuries, they added. Earlier in August, at least five persons had been left wounded in a grenade blast carried out by unidentified assailants in Gulshan-e-Hadeed area of Karachi.