Islamic State claimed responsibility via Twitter on Saturday for an attack on a group of Coptic Christians travelling to a monastery in central Egypt on Friday via Twitter.

At least 29 people were killed and 24 wounded, with many children among the victims.

The tweet read “A security source to Amaq agency: a security group of the Islamic state conducted the attack that targeted a bus transporting Copts in Minya yesterday. It resulted in killing 32 of them.”

The assault follows a series of church bombings claimed by Islamic State in a campaign of violence against Copts.