AFP/Islamabad

Pakistan hanged two sectarian militants yesterday for the murder of a Shia doctor in Karachi, officials said, the latest executions since the government ended a moratorium on the death penalty.
Attaullah, alias Qasim, and Mohamed Azam were convicted of killing doctor Ali Raza in 2001 at the busy Soldier Bazaar area of Pakistan’s largest city, which is racked by rising sectarian violence.
A total of 22 people have now been executed since the government brought back hangings in terror cases amid public outrage over a Taliban massacre at a school that left 150 people dead.
“They were hanged at 6:30 this morning and their bodies have been handed to their relatives,” a prison official said on condition of anonymity.
The convicts were both members of the banned Sunni militant outfit Lashkar-e-Jhangvi (LeJ), he added.
Unknown attackers detonated a low-powered bomb near two schools in Karachi yesterday and left a note at the scene warning of more violence if the hanging of militants did not stop.
Pakistan has suffered a rising tide of sectarian violence in recent years, most of it perpetrated by hardline Sunni groups such as LeJ against minority Shias, who make up around 20% of the population.
The latest sectarian outrage was on Friday, when a suicide bomber killed 61 people at a Shia mosque in the southern Pakistani district of Shikarpur.  
It was the deadliest attack targeting Shias in Pakistan since February 2013, when 89 were killed in a market bombing in the southwestern city of Quetta.
Anti-Shia attacks have been increasing in recent years in Karachi, Quetta, the northwestern area of Parachinar and the far northeastern town of Gilgit.
Around 1,000 Shias have been killed in the past two years in Pakistan, with many of the attacks claimed by LeJ.
The country has stepped up its fight against militants since the Taliban school massacre in the northwestern city of Peshawar in December.
Heavily armed gunmen went from room to room at the army-run school gunning down 150 people, most of them children, in an attack that horrified the world.
In the aftermath the government ended a six-year moratorium on executions, restoring them for terror-related cases, and pledged to crack down on all militant groups.
The roads outside Karachi Central Prison were closed to traffic overnight as a security measure before the hangings.
Both the murderers were arrested in 2004 and tried in an Anti-Terrorism Court, which handed down the death sentence.
The United Nations, the European Union, Amnesty International and Human Rights Watch have called on Pakistan to re-impose its moratorium on the death penalty.
Rights campaigners say Pakistan overuses its anti-terror laws and courts to prosecute ordinary crimes.
There are also concerns that death row convicts from cases not related to terrorism could be executed.