A federal immigration crackdown dubbed Charlotte's Web has netted 250 arrests in North Carolina's largest city, officials said on Wednesday. The arrests of people allegedly in the country illegally came in a span of just four days, officials said.

After immigration officials arrested more than 130 people, some churches report being half empty, an after-school program canceled activities and one U.S. citizen said he started carrying his passport.

Federal immigration authorities will expand their enforcement action in North Carolina to Raleigh, the mayor said, while Customs and Border Protection agents continue operating in Charlotte.

Charlotte's mayor told ABC News that city officials are frustrated over the lack of transparency and a lack of communication regarding the immigration raids.

Rob Brisley, a spokesperson for U.S. Customs and Border Protection, said agents arrested over 130 people during the first two days of the operation.

"Charlotte's Web" author E.B. White's granddaughter slammed DHS for naming Charlotte immigration raids "Operation Charlotte's Web" after her grandfather's beloved children's book.

"The fact that a paper tells me you're now a citizen of this country doesn't take away from the fact that I look the way I look," Cristina Rojas told CBS News.

A surge of federal agents arrived in Charlotte, North Carolina Saturday to take part in immigration arrests despite protests from the mayor and other local officials.