More than 200 people rallied Sunday in support of a Chinese father who is in immigration detention while his 6-year-old son is in being held by the Office of Refugee Resettlement following a routine immigration appointment in New York City.

Fei Zheng and his son, Yuanxin, showed up to the offices of Immigration and Customs Enforcement in New York City on Nov. 26 for a routine check-in, according to Jennie Spector, a community activist who coordinated two volunteers to accompany Zheng and Yuanxin to the appointment. The volunteers waited for Zheng and his son outside the ICE offices, since they’re not allowed inside check-ins.

“They never heard from him,” Spector told NBC News on Monday. “After a number of hours, we kind of assumed that they had been arrested.”

Fei Zheng and his son, Y

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