Security has been tightened near a nuclear power plant in the Indian state of Tamil Nadu after a protestor was shot by police on Monday.
The 44-year-old fishermen was killed in clashes in Tuticorin district.
Activists and locals say they are worried about the safety of the Koodankulam plant, in neighbouring Tirunelveli district.
Work has often been halted by protests, which gained momentum after Japan's Fukushima nuclear disaster.
On Monday, the protests spread to Tuticorin and a group of people blocked a road and a railway track, demonstrating against the loading of uranium for the plant.
The police fired to disperse the group which had blocked the road, leading to the death of the fisherman.
People living close to the site of the reactors in Koodankulam have long been opposed to the joint Indo-Russian project, but businesses in the state, which suffers from power shortages, have welcomed it.
The Tamil Nadu government gave the go-ahead in March for work on the plant's two 1,000 MW reactors to proceed.
It said that it had finished studying experts' reports and judged the plant to be safe.