PHILADELPHIA — A contractor who oversaw a botched building demolition that killed six people in a Salvation Army thrift store in Philadelphia was charged with murder, manslaughter and reckless endangerment on Monday.

Philadelphia District Attorney Seth Williams said Griffin Campbell was also charged with risking a catastrophe and criminal conspiracy in addition to the six counts of third-degree murder, six counts of involuntary manslaughter and 13 counts of endangerment. In the collapse, an unsupported wall crashed down onto the neighboring thrift store, trapping and killing shoppers inside.