Donna O'Rielly was last seen leaving the Highfield Square Mall in Moncton, N.B. (RCMP)

Management of a Moncton mall where a woman went missing last Friday is defending the security system.

Donna O'Rielly, 54, was last seen leaving her job at the H&R Block at Highfield Square about 8 p.m.

On Wednesday, her daughter Karen Streek raised concerns about the mall's video surveillance.

She said none of the security cameras in the parking lot at 1100 Main St. were working the night her mother went missing. In fact, she suggested they hadn't been working for five years.

But Ryck Bourgette, the regional manager for Crombie Properties, said Thursday that's incorrect.

Security cameras in the parking lot are working, but the one on O'Rielly's car malfunctioned four days before her disappearance, he said.

O'Rielly's family believes she was abducted and held a news conference Wednesday to ask for the public's help in finding her.

O'Rielly, who grew up in Isle aux Morts, in southwestern Newfoundland, and raised her family in Gander, moved to Moncton in 2004 with her husband Harold.

H&R Block officials declined to comment on security at the mall, but did issue a statement.

"We are very concerned about the unexplained disappearance of Donna O'Rielly," it states. "We value every one of our employees and we are hoping for her safe return.

"We are co-operating fully with the RCMP but we cannot comment on their ongoing investigation."

Anyone who was at Highfield Square last Friday between 6 p.m. and 9 p.m. is asked to contact the Codiac RCMP at 857-2400 or Crime Stoppers at 1-800-222-TIPS (8477).

Police are working 24 hours a day on the case and have extra staff on hand to take calls.

O'Rielly is five-foot-three and 130 pounds with green eyes and shoulder-length brown hair.

She was last seen wearing a brown medium-length, suede-like jacket and jeans. She was also carrying a brown purse and a lunch bag.