By Ayanjit Sen BBC reporter in Delhi

Two trains carrying relatives of the passengers of the ill-fated Indian train have left Delhi for the crash site in the northern state of Bihar.

Tight security was put in place on the railway station before the trains' departure.

I am praying to God that I do not hear and see what I fear most,

Deeply, wife of a passenger

Officials said the special trains were being run to enable relatives find out at first hand what had happened to their loved ones.

However, many people said they were worried about their relatives as there was little reliable information available from the crash scene so far.

Dozens of people were killed and nearly 200 others were injured when a luxury express train from Calcutta to Delhi derailed early on Tuesday morning.

Hopes and prayers

There was commotion on the New Delhi railway station just before the special trains left for the crash site.

Nervous relatives, many of them with tears in their eyes, boarded the trains hoping they would not have to hear the worse.

Young Deeply, whose husband was travelling on the ill-fated train, told the BBC there had been no news about her husband so far.

Relatives said there was little reliable information

"I am praying to God that I do not hear and see what I fear most," she said.

Thirty-year-old Gnash said he was going to look for his friend's father-in-law.

"I told my friend to stay back because he might not be able to bear any possible bad news," he said.

But Harkishan Singh, whose son and daughter were also on the train, was inconsolable.

"I don't know what has happened to them." Their names are not on the list of the injured released so far.

"I just hope God has saved them," he said.

Officials were seen comforting some relatives at the station before the trains left.