By breaking the signal cables, robbers have entered into the SI coach of Hyderabad-bound Chennai Egmore Express near Tadipatri in Anantapur district on Wednesday night. They tried to snatch gold, cash and other valuables from sleeping passengers. But, passengers raised an alarm on seeing robbers. Railway police personnel, who were in the next compartment fired bullets in the air on hearing the cries of passengers. Robbers escaped by jumping from the running train. However, they managed to snatch four tolas of gold from a woman passenger.