Bomb exploded at southwest bank overnight, police investigating

Police are investigating a bomb detonation inside a bank lobby at a south side bank early Wednesday morning.
Emergency crews responded to a call for assistance from security guards at a RBC Royal Bank near 27 Avenue SW and 141 Street SW around 1:40 a.m.
The guards had just arrived at the bank in the Chappelle Gardens neighbourhood for work when a loud bang rang out from inside a lobby, police said in a news release.
Paramedics treated and transported the guards to hospital for precautionary reas