The mother of a U.S. citizen taken into custody during a chaotic immigration enforcement interaction in a retail parking lot on Tuesday is pleading for answers as her son remains unaccounted for nearly 24 hours later.

Adrian Andrew Martinez, 20, was tackled and forcibly detained by several U.S. Immigration and Customs Enforcement agents in a parking lot near the 8600 block of Washington Boulevard. According to his mother, Myra Martinez, Adrian Martinez had clocked in for his shift at Walmart around 5 a.m. and went on a break at approximately 8 a.m. when ICE agents were reportedly seen in the vicinity.