Islamabad, Pakistan (CNN)At least 75 people were killed in a suicide attack Thursday at Pakistan's packed Lal Shahbaz Qalandar shrine in the southern city of Sehwan in Sindh province, according to a local hospital official.

Recent Ts acts are being exec on directions from hostile powers and from sanctuaries in Afghanistan. We shall defend and respond.

CNN's Sophia Saifi and Adeel Raja reported from Islamabad, with Ray Sanchez writing and reporting in New York. Journalist Saleem Mehsud also contributed to this report.

Source:   CNN