QUETTA - At least six people, including four personnel of security forces were killed and 23 others, including 16 security personnel were wounded in different bomb blasts and firing incidents in Quetta, Naseerabad, Turbat, Sibi and Jaffarabad on Thursday. According to police, a convoy of Frontier Corps (FC) was passing from Sariab Road when explosives planted with a car parked at Badini Crossing exploded soon after convoy passed through the area. As a result, one security personnel identified as Muhammad Umar died on the spot and five others sustained serious injuries. However, names of injured security personnel could not be ascertained. The blast badly damaged the FC vehicle and scattered windowpanes of nearby buildings. Soon after the blast, police and personnel of FC cordoned off the area and moved the injured to hospital for medical aid. 'One FC personnel has been martyred in the blast while the injured are civilians, spokesman of FC told this scribe. According to bomb disposal squad 20 to 25 kilograms explosives were used in the blast which were fitted in the car and were detonated through a remote controlled device. Sources said that police and FC had started a search operation in Sariab area for the arrest of the accused persons. In another similar incident, three people, including two FC personnel were killed and seven other received injuries in a remote controlled bomb attack in Naseerabad district, some 400km southeast of Quetta. Sources said that a convoy of FC was passing from Chattar Road of Naseerabad when explosive material placed at roadside exploded killing three people including two FC personnel identified as Kaleemullah and Ghulam Masood on the spot and causing serious wounds to 7 other security personnel. Sources said that explosives were detonated soon after vehicles of FC passed through the area ,adding, that blast damaged the vehicle and sent a wave of panic amongst the people of the area. The injured and deceased were moved to nearby hospital where injured were identified as Alsam, Sajjad, Riaz, Abdul Rehman, Sawab Khan, Lutfullah and Tajamul Hussan, however, identification of third deceased who is said to be a passerby yet to be ascertained. Meanwhile, spokesman of banned outfit Baloch Republican Army (BRA) has claimed responsibility for remote controlled bomb attack on security personnels vehicle. In another incident, two personnel of Anti-Narcotics Force (ANF) were wounded in bomb attack in Turbat town of Kech district. Sources said that explosives were fitted with a cycle and blast took place at main chowk of Turbat city that caused injuries to two ANF personnel and damaged their vehicle. Eyewitnesses said that ANF personnel fired gunshots into the air after the blast that spread panic in the locality. In Sibi, militants attacked Bolan Mail with explosives causing injuries to seven people. Sources said that Quetta-bound Bolan Mail was attacked at Dangra area when explosives planted with track exploded and caused damages to engine besides wounding several people. However, their names could not be known. Heavy contingent of security personnel rushed to the site after being informed about incident and cordoned off the area. A relief engine has been dispatched for Bolan Mail from Sibi Railway station. Meanwhile, two people, including a policeman were killed and two other wounded in an armed attack on a police post in Jaffarabad district. Sources said that unidentified people attacked Dolat Khosa police check-post near Manjipur with sophisticated weapons. As a result, police man Akthar Hussain and two other policemen Sabir Ali and Ghulam Nabi received bullet wounds. Police personnel also fired in retaliation and killed an alleged attacker who was identified as Hazaro Shalwani Bugti. Sources said that after the incident District Police Officer Syed Javed Iqbal Garsheen alongwith heavy contingent of police rushed to the site and shifted injured to Larkana for treatment. The body of alleged attacker Hazaro Shalwani Bugti was later shifted to Civil Hospital Dera Allahyar.