The three researchers in Tea Board of Sri Lanka, were part of an eight-member foreign delegation to attend a three-month International training programme on tea manufacturing and quality maintenance and were staying in a hotel for the last two months, police said.
Learning about their stay, some pro-Tamil outfits announced their plans to stage demonstrations in front of the Tea Board of India office, the joint organisers of the programme, this morning, sources said.
Other members of the delegation hail from Germany, Myanmar and Central America.
Various political parties in Tamil Nadu are demanding that India boycott the CHOGM in Sri Lanka later this month on the Sri Lankan Tamils issue.