A railroad employee reported someone may have jumped from a bridge into the rain-swollen Arkansas River late Tuesday night, but searchers were unable to find anyone, authorities said.

The caller, who works for the Union Pacific railroad, called 911 at 11:58 p.m. to report that at least one person had jumped into the river near the intersection of Topeka and St. Francis in south Wichita, a Sedgwick County dispatch supervisor said. The search was called off for the night early Wednesday morning.

Steady — and at times very heavy — rains over the past week have swollen area creeks and rivers, making currents especially dangerous.