New Delhi, July 27 - Heavy rains flooding the capital Monday caused disruption in railway traffic and many trains to and from Delhi were delayed by at least two-three hours, an official said.

The signals on the tracks from the New Delhi Railway Station and the Old Delhi have failed leading to chaotic situation for thousands of passengers. There has been no movement of train traffic after 9 p.m., the official said.

Engineers were at the scene to determine the damage and carry out emergency repair work, he said.

The extreme weather hampered the work but the situation was being monitored closely 'to bring the line back-up as soon as possible', the official said.

The Hazrat Nizamuddin track was also flooded with rain water.