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.

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.

Orleans Parish Sheriff Susan Hutson faced a new round of criticism Thursday over last week's brazen jailbreak and her response, this time from District Attorney Jason Williams, as the manhunt

Casey Smith, 30, was arrested on Thursday for allegedly assisting two of the 10 inmates who escaped from the Orleans Justice Center on May 16, police said.

"We are deeply disappointed in the overall management of the Orleans Parish Sheriff’s Office - from Susan Hutson to the maintenance staff," the Robinson family said.

New Orleans sheriff waited nearly a week to have the scene of a 10-man jailbreak processed for evidence by crime lab technicians, and then did so only at the behest of the district attorney, according to Orleans Parish District Attorney Jason Williams.

As the search for five remaining escapees continues, Orleans Parish DA Jason Williams says there were delays in evidence gathering at the jail.