Kuwait said Thursday it executed five prisoners, including a convicted drug dealer from Sri Lanka.

Among them was also an inmate convicted over the bombing of a Shiite mosque in 2015 that killed 27 people and was claimed by the Islamic State group.

The inmates were hanged at the Central Prison, Kuwait’s Public Prosecution said in a statement.

Prosecutors said the five include the man convicted in the mosque attack, Abdulrahman Sabah Idan, three people convicted of murder and a convicted drug dealer from Sri Lanka. One of the convicted murderers was Egyptian, another was Kuwaiti.