Friday's shooting outside the Empire State Building has been mostly attributed to shooter Jeffrey Johnson's longstanding grudge against former co-worker Steven Ercolino. This morning, the New York Post shed some additional light on the situation: Johnson — who had been without work for two years after being laid off from Hazan Import — could no longer make rent on his Upper East Side one-bedroom and his landlord had threatened to force him out. "This was the final straw that pushed him over the edge," a police source told the paper. "He was blaming the victim for being out of work, having no money and now having no apartment."