Federal officials are moving a step closer to allowing state and federal prisons to jam cellphone signals from devices smuggled to inmates.

South Carolina’s prisons director says the state's supply of its lethal injection drug is pure, its electric chair was tested two months ago and its firing squad has the ammunition and training to carry out its first execution in more than 13 years.

Federal regulators are considering allowing state prisons across the country more technological options to combat contraband cellphones.