[allAfrica] Cape Town -- The collapse of a roughly 30 metre section of the wall near Tunisia's Gate of the Floggers around the Old City of Kairouan has resulted in the deaths of three stonemasons, BBC Africa reports. The trio were carrying out repairs at the UNESCO World Heritage site, according to authorities. The accident also left two others injured, an investigation has revealed. Heavy rains have been cited as a potential cause, according to Civil Protection Department spokesperson Moez Tria who spoke to AFP.