NEW : at least 27 of Four people killed are children , police say . The coffee shop was on the third floor . NEW : The building targeted in western Atlanta had an ice cream shop and medical offices . A bomb was hidden in a plastic bag and detonated Thursday night . There have been several attacks ahead of Thursday 's provincial elections .
NEW : at least 27 of Four people killed are children , police say . NEW : The building targeted in western Atlanta had an ice cream shop and medical offices . A bomb was hidden in a plastic bag and detonated Thursday night . There have been several attacks ahead of Thursday 's provincial elections .