LANCASTER COUNTY, Pa. (WHP) — More than a dozen people who work for a Mount Joy poultry management business have been detained by U.S. Immigration and Customs Enforcement since late August, according to a nonprofit advocacy group and an anonymous source close to the situation.Eighteen employees of Melhorn Sales, Service and Trucking were arrested in three different stops, said Michelle Hines with Solidarity Lancaster, a nonprofit that advocates for immigrants’ rights and helps connect people to resources.Melhorn, located on 1010 W. Main St. in Mount Joy, was founded in 1957 and provides services related to poultry transportation.A family member of an employee, who asked to remain anonymous, said ICE agents stopped trucks of workers while they were making deliveries on one day in late August, along with two days in early and mid September. The stops reportedly happened on West Main Street, which is located just outside the business, and near a Sheetz along Route 230 in Rapho Township.The source said four of those detained have already been sent back to Guatemala, and at least one other person was transferred to Oklahoma.CBS 21 reached out to the Department of Homeland Security to confirm specific dates and details but has not yet heard back. Mount Joy Police Chief Robert Goshen also has not yet returned requests for information.However, Goshen reportedly told Lancaster Online Thursday that local officers were not involved in the arrests, and they only found out once they were contacted by Melhorn. Goshen also told the outlet he’s been in contact with ICE, and these were targeted arrests with warrants.Despite that, Hines said she’s skeptical that agents pulled over the trucks looking only for specific individuals.“A lot of employees are in each of these trucks who weren't arrested because they showed proof of citizenship or proof of legal status at the time,” she said. ”Which means that every time they pull over one of these trucks, they're asking every single brown person in there about their citizenship status and asking them to show proof of citizenship.”Both Hines and the anonymous source said they’ve heard that some of the remaining employees have been taking off work, afraid they too might be targeted, regardless of their status.“People are obviously very shaken by this event,” Hines said.CBS 21 also left messages with Melhorn Sales Service and Trucking but has not yet received a response.Hines said it’s a situation that’s becoming all too common for Solidarity Lancaster and area nonprofits.“We are constantly feeling like we're losing, constantly trying to help people,” she said. “The amount of people who are contacting us, telling us that their family members have been taken and wanting help is way beyond anything that we have experienced.”