Gharaunda (Haryana), Sep 16 - Police in Haryana Wednesday hunted for four or five young men who allegedly stoned the Swarn Shatabdi Express in which Congress general secretary Rahul Gandhi was travelling the previous evening from Ludhiana to New Delhi.

The police and Railway Protection Force (RPF) probing the stone attack Tuesday evening near this Haryana town, 120 km from New Delhi, said that the guard at a railway gate had seen four or five youths, aged 16 to 18 years near the spot.

'These people seem to have stoned the train. We are investigating the matter based on various clues. People in nearby villages are being questioned,' said Rohtak Range Inspector General of Police V. Kamaraj.

He added that no arrests had been made.

Police and forensic experts in Haryana Wednesday questioned people and searched villages in the region to identify the attackers.

Though no one was injured, three coaches, C-2, C-4 and C-7, were damaged.

One stone actually pierced the twin glass window of the Shatabdi Express and landed inside coach C-4. The glass panes of two other coaches suffered damage.

The attack is being viewed seriously by Haryana Police as well RPF officials because the train had a VIP guarded by the Special Protection Group (SPG) on board.