MINNEAPOLIS (AP) — Authorities in St. Paul have shut down a popular fossil-hunting area in a riverside park, one day after two children were killed and two others injured by a landslide.

Mayor Chris Coleman announced the indefinite closure today after searchers this morning recovered the body of a boy who had been missing since rain-saturated soil gave way Wednesday afternoon. The boy, who family members identified as 10-year-old Mohamed Fofana, was on a field trip to Lilydale Regional Park with other fourth-graders from Peter Hobart Elementary School in St. Louis Park.

Another boy, who authorities identified as 9-year-old Haysem Sani, died at a hospital Wednesday after being pulled from the soil and sand.

St. Paul typically issues about 400 permits a year for school and other groups to explore a part of the park where numerous fossils are embedded in the Mississippi River bluff.