To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video NOW: Advocates seek answers after FBI and ICE conduct raid in Manitowoc NEXT:

MANTIOWOC, Wis. (CBS 58) -- Immigration advocates said Friday, Sept. 26, they were working to learn more details about a raid in Manitowoc one day earlier in which federal authorities said they'd arrested 21 people in the U.S. illegally.

The FBI's Milwaukee field office said in a social media post the joint action with ICE led to the arrest of nine undocumented migrants suspected of human trafficking and sex crimes involving underage girls.

Matthew Sauer, a pastor at Manitowoc's First Presbyterian Church, said he knew some of the arrested migrants and their families. The church is part of

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