(Updates with quotes, details)

By Thomas Kutty Abraham

AHMEDABAD, India, March 2 (Reuters) - A Muslim youth died in western India after police opened fire on Hindu and Muslim cricket fans who clashed over India's World Cup triumph against rival Pakistan, police said on Sunday.

The 18-year-old died overnight after police fired to disperse dozens of Hindu and Muslim fans hurling stones at each other late on Saturday in the Muslim old quarter of Ahmedabad, the main city of the state of Gujarat, which saw religious riots a year ago.

"He died in the hospital, the wound was on his chest," a senior police official told Reuters. "At least six were hurt in stone-pelting but the situation's quiet now.

"We've got routine police patrols out on the streets," added additional commissioner of police Satish Verma, saying there had been scattered violence across the state but no injuries.

Cricket is a passion on the subcontinent. Matches between mainly Hindu India and Islamic Pakistan, which have gone to war three times, twice over disputed Kashmir, create a charged atmosphere that has often led to clashes in Gujarat.

The coastal state was the site of India's worst religious bloodshed in a decade in February and March last year in which nearly 1,000 people, most of them Muslims, died in a wave of revenge killings after a train arson attack left 59 Hindus dead.

Elsewhere fans across India partied until dawn on Sunday to celebrate their team's decisive six-wicket win over Pakistan that was splashed across newspaper front pages. "We did it. Now for the Cup," blared the Hindustan Times in a banner headline.

"Everyone's ecstatic," said bleary-eyed New Delhi medical student Dheeraj Rai, 24. "I've been out on the roads, going from place to place ever since India won, partying with my friends."

Revellers draped the Indian tricolour over their shoulders and did victory jigs in the streets, shouting themselves hoarse.

In the eastern city of Calcutta, fans massed outside Indian captain Saurav Ganguly's house roaring, "Long live India".

But in Pakistan, the streets were silent amid disappointment over the country's crushing defeat and details of the loss were pushed to newspapers' back sports pages.

"Indian ace outclasses Pakistan pace," said a headline in the News daily. "Thank God it was only a game. No irreparable loss...(only) loads of frustration," columnist Nasim Zehra wrote. (Additional reporting by Kunal Pradhan in NEW DELHI and Tahir Ikram in ISLAMABAD)