A Joint Investigation Team (JIT) headed by Senior Superintendent Police (SSP) Intelligence Counter-Terrorism Department (CTD) Omar Shahid Hamid was constituted on Tuesday to probe the involvement of Amjad Sabri murder suspects Ishaq alias Bobby and Asim alias Capri in various high-profile cases.

The CTD's arrest of Ishaq and Asim was announced by Sindh Chief Minister Murad Shah on Monday. The two men allegedly affiliated with the Lashkar-i-Jhangvi Naeem Bukhari group are suspected of involvement in 28 cases.

Shah said there was 'conclusive proof' that the two were part of a gang involved in the following nine 'major incidents':

• Oct 29 attack on Nazimabad majlis
• Oct 17 attack on a majlis
• July 26 attack on army personnel in Saddar
• June 22 attack on Amjad Sabri
• May 21 killing of two traffic constables at Aisha Manzil
• April 20 attack on policemen
• Dec 2015 attack on military police near Tibet Centre
• Nov 20, 2015 attack on Rangers personnel in Ittehad Town
• Aug 29, 2015 attack on Supreme Court judge Advocate Syed Hamid Haider in Hassan Square

A Sindh Home Department notification said, "A JIT is hereby constituted for the purpose of interrogation in respect of [Ishaq and Asim's] involvement in heinous high-profile cases including incidents of terrorism, murder of Army and Rangers personnel in Karachi."

The notification said the JIT is to investigate the matter within seven days, and will submit a report within two days of conclusion of the probe.

The team, led by SSP CTD Intelligence Hamid also includes Special Branch SSP Younis Chandio, and representatives of the Rangers, Inter-Services Intelligence, Military Intelligence, and the Intelligence Bureau.