Al Jazeera reports the Pakistani Taliban has formally ended a 40-day ceasefire but is still open to talks with the government, according to a spokesman for the group. Shahidullah Shahid said on Wednesday the Pakistani Taliban was not extending the ceasefire, which began on March 1, because the government had continued to arrest people and killed more than 50 people associated with the group. "However, the talks will continue with sincerity and seriousness and in case there is clear progress from the government side, [the Taliban] will not hesitate to take a serious step," he said in a statement. The announcement comes three days after Chaudhry Nisar Ali Khan, Pakistan's interior minister, said the process was about to enter a "comprehensive" phase. Peace talks between the Taliban and the government of Nawaz Sharif began in February but the first round ended in violence.