SAO PAULO, BRAZIL — A landslide caused by heavy rainfall has cut off road delivery to Brazil’s busiest port for grains and sugar, Reuters reported, citing the Paranagua port authority.

About 80% of goods to the port come by truck. It is too early to estimate the potential losses from the disruption, the port authority said.

Terminals are now moving stockpiled goods that are expected to last until the weekend, Reuters said. It is not clear when the roadblocks will be removed.

Rail operator Rumo said cargo train service to Paranagua had resumed with restrictions. The main products that arrive by rail include sugar, soybeans and corn.