Carrying 'save our children' placards, scores of parents of those stuck in war-torn Ukraine's Kharkiv city staged a protest here on Wednesday and appealed to the Centre to immediately evacuate the students. They also asked the people of the country to offer special prayers for the safe return of the trapped students. According to official sources, evacuation flights have brought back around 2,000 Indians stranded in Ukraine since February 26. As many as 31 evacuation flights will be operated till March 8 to neighbouring countries of crisis-hit Ukraine and will bring back more than 6,300 Indians stranded in the eastern European nation. The protest was staged outside the Press Club, a day after a medical student from Karnataka's Haveri district was killed in intense shelling in the eastern Ukrainian city of Kharkiv – the first Indian casualty in the war between Russia and Ukraine.