JAKARTA—The death toll from floods and landslides triggered by the tropical cyclone Seroja in a cluster of islands in southeast Indonesia rose to at least 55, with 40 still missing, the disaster agency BNPB said on Monday. At least 400 people in the East Nusa Tenggara province, which comprises of several islands, were evacuated after their homes were hit by flash floods, landslides, and strong winds amid heavy rain brought by the cyclone, the agency said. Several bridges collapsed, trees fell and blocked some roads and at least one ship sank as the cyclone also triggered high waves, complicating search and rescue operations, the BNPB said. “We’re sending basic logistical needs such as food, blankets, and others,” Raditya Jati, the agency spokesman said. President Joko Widodo offered his condolences and urged residents to follow the direction from field officers during extreme weather. “I have ordered for disaster relief efforts to …