Bangalore, March 15 (IANS) Global software major Infosys Technologies Ltd has advised its Indian employees to send their families back to India and has given them the choice to return if the situation warrants it, a top official said Tuesday.

"We have about 350 Indian software professionals working at our proximity development centre in Tokyo. We have advised them to first send back their families and gave them a choice to return or stay back depending on the situation," Infosys Chief Executive S. Gopalakrishnan told IANS.

"We are constantly in touch with our employees for regular feedback. We are informed that things are coming back to normal in Tokyo, but the situation there is changing by the hour due to the fallout of the explosions in the nuclear reactor," Gopalakrishnan said.

Infosys is also making arrangements for the safe return of its employees' families and its techies if they choose to come back.

"Though our operations are not affected per se, we are providing all support to our staff and their families to overcome the crisis situation. Their logistics are being taken care of," Gopalakrishnan added.

A fire broke out at a fourth reactor in Japan's Fukushima 1 nuclear power plant Tuesday, hours after a blast ripped its third reactor. The government has said that radiation released by the damaged reactors was high enough to harm human health.