A planeload of immigrants were reportedly strapped down with physical restraints during a 51-hour journey that dropped detainees in six countries last month, marking one of the longest-ever deportation flights under President Donald Trump in a record-breaking month for removals. Immigration and Customs Enforcement performed at least 245 removal flights in April — a monthly record since independent monitors began tracking the planes in 2020, according to Thursday’s report from Human Rights Watch. That spike was largely driven by a surge of deportation flights to Mexico, which accounted for at least 68 flights last month. But the administration also accelerated so-called third-country removals , in which immigrants are forcibly transferred to nations where they don’t have any claims of citizenship, family connections, clear legal protections or a path to getting out. The number of third-country removal flights more than doubled from March to April with first-time flights to at least nine countries.…