The 10 inmates who broke out of a New Orleans jail in a stunning overnight escape last week used electric hair trimmers with multiple clipper blades to help cut their way through the cell walls, a source with direct knowledge of the investigation told CNN.

As the fugitive search enters a second week, fears are increasingly giving way to frustration, anger and a desire for accountability.

A retired FBI expert says the New Orleans jail escape exposes critical staffing shortage and other issues after 10 inmates escaped on Friday, May 16.

NOPD arrested Casey Smith, accused of assisting two inmates who escaped from the Orleans Justice Center. Smith faces accessory charges after the fact to simple escape.

On Monday, Sterling Williams, a 33-year-old maintenance worker at the jail, was arrested on charges that he shut off water to a cell that the inmates used in the escape by removing a toilet from the wall, the office of Louisiana Attorney General Liz Murrill said.

Ten men escaped from a New Orleans jail on Friday and four have been apprehended, officials with the Orleans Parish Sheriff's Office said.

Authorities have arrested an Orleans Parish Sheriff's Office maintenance worker in connection with the escape of 10 jail inmates.

See how prisoners escaped from Orleans Parish Prison, where 5 of 10 the inmates were caught, and the charges against those still at-large.

Williams was arrested Monday night, the office of Louisiana Attorney General Liz Murrill confirmed to CBS News. Murrill said in a statement Tuesday that Williams allegedly told investigators an inmate "advised him" to turn the water off in the cell that would be used for the escape, which involved removing a toilet from the wall.

Orleans Parish District Attorney Jason Williams scorched Sheriff Susan Hutson for failing to order an investigation into the crime scene where 10 inmates escaped from jail.