The Bulgarian authority's profiling puts the suspect in the "Recent convert to Islam Radicalized" mould. Thus he is like other "white" suicide bombers - Belgian Muriel Degauque or the Brits Samantha Lewthwaite and Richard Reid. Things cannot be rewound. The terrible damage is done, but it is far better now if this was a lone wolf operation than one done with state backing from Iran or organisational backing from Hizbullah et al. Let's see what is confirmed in the coming hours and days... Prayers for the deceased and injured from this evil attack.
Hamas says Egyptian mediation has restored calm along Israel, Gaza border (Haaretz)