Explosions and gunfire were heard from inside the camp, while at least five gunmen clashed with troops in downtown Jenin city, it was reported.
Following the raid, all schools in Jenin and its adjacent refugee camp had been evacuated, Palestinian News Agency, Wafa, said.
The road between the hospital and the camp had been stripped of its asphalt by Israeli troops who said they were looking for concealed bombs. Drones buzzed overhead and sporadic gunfire rang out.