The search for clues into why a Chinese commercial jetliner dove suddenly and crashed into a mountain in southern China was suspended Wednesday as rain slickened the debris field and filled the red-dirt gash formed by the plane’s fiery impact. Earlier, searchers had used hand tools, drones and sniffer dogs under rainy conditions to comb the heavily forested slopes for the flight data and cockpit voice recorders, as well as any human remains. Crews also worked to pump water from the pit created when the plane hit the ground, but their efforts were suspended around midmorning because small landslides were possible on the steep, slick slopes. Video clips posted by China’s state media showed small pieces of the Boeing 737-800 plane scattered over the area. Mud-stained wallets, bank and identity cards have also been recovered. Each piece of debris has a number next to it, the larger ones marked off by police tape. Read: Ukraine thwarts Russian advances; fight rages for Mariupol