Devotees walk on a blood-stained floor after a suicide blast on Thursday, at the tomb of Sufi saint Syed...
Devotees walk on a blood-stained floor after a suicide blast on Thursday, at the tomb of Sufi saint Syed Usman Marwandi, also known as the Lal Shahbaz Qalandar shrine, in Sehwan Sharif, Pakistan's southern Sindh province, February 17, 2017. REUTERS/Akhtar Soomro