KARACHI: Two people have been arrested by the Counter-Terrorism Department for the alleged murder of famed qawwal Amjad Sabri and other high-profile cases, Sindh Chief Minister Murad Shah told journalists on Monday.

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"The CTD headed by Raja Umar Khattab made a major breakthrough and arrested two people from Liaquatabad called Ishaq alias Bobby and Asim alias Capri. Their weapons were also recovered... After a probe and forensic investigation, we found proof of involvement in 28 cases," Murad told a press conference.

The men are affiliated with the Lashkar-e-Jhangvi Naeem Bukhari group, the chief minister said. "There is no affiliation with a political party, it is a proscribed organisation."

"Asim alias Capri was Amjad Sabri's neighbour. We have not found any motive [behind the murder] as yet, but it seems sectarian to us because Sabri used to frequent majalis and had links to Ahle Tashi. The weapons used in the incident were a match," he said.

Shah said there was 'conclusive proof' two were part of a gang involved in 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

"It is certain that the two people we have arrested will lead us to the rest of the gang," he said.

The weapons were matched using empty bullet casings collected from crime scenes and bullets retrieved during postmortems, the Sindh chief minister said.

They two men were also involved in various instances of target killing of 12 other police personnel and seven Shia target killings, he added.

A large quantity of weapons were recovered from the suspects, including three SMGs, two MP5 rifles stolen from police, 27 pistols, and lots of hand grenades and IEDs, he said.

"There have been protests in Malir today, but there is no particular community or sect being targeted," the chief minister said.

"This is to stop terrorism. If we have suspicions, we are detaining people. And when they are being cleared, we are releasing them... This is the biggest menace in our country and we will go to any extent to end it. I request the people of Karachi and across Sindh to support us in this matter," said Murad.

"Those involved in the killing of Ahle Sunnat Wal Jamaat (ASWJ) activists will also be apprehended, he said. Police personnel involved in the arrest of suspects will be rewarded, he added.

Offering clarification behind the detention of religious workers and leaders, Murad Shah said, "There were already cases against Mirza Yusuf Husain in which he didn't have bail and his name was in the fourth schedule. He was apprehended in light of the given situation."

"[ASWJ leader Taj] Hanafi was also picked up under the MPO because of the ongoing situation."

When asked about arrest of former senator Faisal Raza Abidi and his alleged involvement in sectarian killing the CM said, "Faisal Raza Abidi was arrested for possession of unlicensed weapons."

Adviser on Information Moula Bux Chandio and Sindh Inspector General (IG) AD Khawaja also accompanied Shah during the press conference.

Amjad Sabri was gunned down in Karachi June 22, 2016, after unidentified assailants fired at his vehicle in the city's Liaquatabad area, critically injuring him. He was shifted to Abbasi Shaheed hospital immediately, where Sabri succumbed to his injuries.

Responsibility for the attack was earlier claimed by a spokesperson for the Tehreek-e-Taliban Pakistan Hakimullah Mehsud group.