Construction vehicles clean up the debris from a Friday evening explosion that killed at least two people.
Cleanup and rescue crews are working through the debris of a Friday explosion at a chocolate factory in West Reading, Pennsylvania.
  • A Friday evening explosion leveled a chocolate factory in Reading, Pennsylvania.
  • The explosion killed at least four, and sent several to the hospital; others are still missing.
  • Officials said at a Saturday morning press conference that one person was found alive overnight.

A fourth person was found dead after a mystery explosion Friday evening at a Pennsylvania chocolate factory, and several still are missing, according to officials.