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.

The Louisiana authorities are still searching for five of the 10 inmates who escaped from the Orleans Parish Justice Center last week.

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.

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

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.

An Orleans Justice Center inmate, who was not one of the 10 to escape last week, is facing new charges and accused of helping the others in the jailbreak, Louisiana

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.

A lawyer for a worker charged with helping 10 men escape a New Orleans jail says the worker did not know about the jailbreak plan.

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.