Japanese police obtained arrest warrants against three activists from the U.S.-based animal rights group Sea Shepherd on allegations that they attacked Japanese whaling ships last year, a news report said.
Tokyo District Court approved the arrest warrants, Kyodo News agency said. Neither the court nor the Tokyo Metropolitan Police Department confirmed the report.
The aim of the warrants was to place the two Americans, ages 41 and 30, and a 28-year-old Briton on an international wanted list, Kyodo said.
The three have not been named.