More than 300 homes were affected — and four destroyed entirely — by Friday’s deadly plane crash in Northeast Philadelphia, officials said Monday as the extent of the disaster came into focus even as questions remained about what caused the crash and who will pay for recovery effort.

Three people injured on the ground when a jet crashed in a busy Philadelphia neighborhood, killing seven people, remain in critical condition, Mayor Cherelle Parker said Sunday. Parker said 22 people were injured and five of them remain hospitalized.