Leaking gas was likely to blame for an explosion that killed at least 12 people, injured 60 more and brought down part of a building in Argentina on Tuesday, state media reported Wednesday.
A man who was working at the scene in the city of Rosario before the blast ignited at 9:15 a.m. local time has been taken into custody, said the Telam news agency, which cited investigator Juan Curto.
The explosion gutted one multi-story residential building, and destroyed at least one other building next to it, while blowing out the windows of surrounding structures, images broadcast by CNN affiliate Canal 9 showed.