Federal immigration authorities will expand their enforcement action in North Carolina to Raleigh as soon as Tuesday, the mayor of the state's capital city said, while Customs and Border Protection agents continue operating in Charlotte following a weekend that saw arrests of more than 130 people in that city , the state's largest.

Mayor Janet Cowell said Monday that she didn't know how large the operation would be or how long agents would be present.

Immigration authorities haven't spoken about it. CBS News has reached out to the Department of Homeland Security for comment.

Cowell, a Democrat, said in a statement that crime was lower in Raleigh this year compared to last and that public safety was a priority for her and the city council.

"I ask Raleigh to remember our values a

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