The building at 26 Federal Plaza in Lower Manhattan was evacuated on Thursday afternoon following reports of a suspicious white powder.

The FBI is investigating after envelopes containing an unidentified white powder were found at New York City building that houses an ICE office.

A Brooklyn student detained by Immigration and Customs Enforcement at a routine hearing was alone, seeking asylum in the United States, elected officials said. On Thursday, officials and advocates called for the release of 20-year-old Mamadou Mouctar Diallo,

People will demand the release of the 20-year-old immigrant from Guinea, known as Mouctar, at the rally in Lower Manhattan. CBS News New York's Christina Fan reports.