The devices went off on Sunday outside the shrine of Sakhi Sarwar in Dera Ghazi Khan District, which is one of the most populated areas in Southern Punjab.
Pro-Taliban militants and Saudi-inspired Wahhabi extremist groups have launched a violent campaign against Shia Muslims and Sufi gatherings. They appear to have widened their terror campaigns in major Pakistani cities.
Several religious gatherings have been targeted in different parts of the country over the past few months.
Since the 1980s, thousands of people have been killed in sectarian-related incidents in Pakistan.
Despite an offensive by the Pakistani government against pro-Taliban militants, they have spread their influence in various regions, killing people and security forces every day.
More than 4,000 people have died in bomb attacks across Pakistan since 2007.