This note was left at the location of the killing of 2 men from the Bhori community at Bahadurabad: pic.twitter.com/fqhqh13vG4 — Syed Ali Raza Abidi (@abidifactor) March 20, 2015

The blast took place in Saleh Mosque in the congested Aram Bagh area.A police spokesperson said two were killed in the blast and seven wounded.Saifud Din, a witness, said people were coming out of the mosque after Friday prayers when there was a huge blast and many people fell on the ground.Volunteers transport victims to a hospital. PHOTO: AFP"I was inside the mosque when the bomb exploded and I saw people falling to the ground," Din told AFP.Umer Khatab, a senior officer at the police Counter Terrorism Department, told reporters that about two kilogrammes of explosives were used in the bomb, which was detonated with a timer."The bomb was planted to target the people coming out of the mosque," Khatab said.Police officials inspect the site. PHOTO: AFPMany worshippers in bloodstained clothes gathered outside the mosque, searching for relatives.The blast ripped through the shutters of several nearby shops and shattered windows.Volunteers transport victims to a hospital. PHOTO: AFPThe attack was the first on a Bohra mosque in Karachi since an incident three years ago, in which seven people were killed.Karachi, a city of 18 million, is rife with criminal, ethnic, political and sectarian killings, which claim hundreds of lives each year.Saifud Din, a witness, said people were coming out of the mosque after Friday prayers when there was a huge blast and many people fell on the ground."I was inside the mosque when the bomb exploded and I saw people falling to the ground," Din told AFP.According to police, the motorcycle on which the explosives were planted was registered in the name of a resident of Kemari in Karachi.However, it is yet to be ascertained whether the motorcycle was stolen.Four injured have been discharged from Civil Hospital while one critically injured is going through surgery, according to Express News.A few weeks ago, an unidentified person opened fire at shops owned by Bohra community in Karachi's Bahadurabad area.Another person has succumbed to his injuries bringing the death toll to two. The deceased has been identified as Hasnain.CID incharge Raja Omar Khatatk confirmed the death toll.The emergency ward of Civil Hospital has been sealed and relatives of the injured are not being allowed inside, Express News reports.The body of one person has been brought to Civil Hospital, according to Express News.The deceased has been identified as Shabbir Hussain.SSP South claims two kilogrammes of explosives were used in the blast, according toExpress News screengrab of blast siteSindh Chief Minister Qaim Ali Shah condemning the blast, has sought a report from DIG Sindh.According to initial reports, time device explosives were used in the blast.Express News screengrab of blast siteThe number of injured has now risen to 10, according toHowever, DIG South says only 4 people have been injured.As per an unconfirmed report, one man has been killed in the explosion.The blast occurred as people were coming out of the mosque after Friday prayers, according to our correspondent Faraz Khan.Eight people have been injured and are being shifted to Burhani Hospital.Following the blast, security forces have cordoned off the area.Express News screengrab of blast siteThree people have been injured and shifted to Civil Hospital.Several motorcycles damaged and windows of nearby shops have been broken due to the impact of the blast.Express News screengrab of blast siteAs per initial reports, the bomb was planted in a motorcycle parked near the mosque.Police and rescue teams have reached the site of the blast.