The recent surge of federal immigration enforcement in Massachusetts known as Operation Patriot 2.0 resulted in just over 1,400 arrests, officials said Thursday.

Of the 1,406 undocumented immigrants arrested over the Sept. 4-30 operation, over 600, or less than half, have been convicted of or charged with significant crimes, according to Thursday's announcement from U.S. Immigration Customs and Enforcement . They said that 277 of those arrested were in the country despite being ordered removed by an immigration judge.

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The first ICE surge in Massachusetts known as Operation Patriot , in May, netted 1,461 arrests, of which 790 involved a person with "significant criminality," officials said at the time. It wasn'

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