Ajmer, Nov 15: About half a lakh pilgrims took a dip in the Holy Pushkar Lake today, even as four people from Jammu and Kashmir were arrested in view of threats of a terrorist attack during the annual Pushkar Fair, official sources said.

Braving inclement weather, the devotees thronged the 'Ghats' of the holy lake, 13 kms from here, early in the morning and took a bath on the occasion of 'Kartik Ekadashi'. They then went round various nearby temples, including the one of its kind Brahma Temple, the sources said. Four Kashmiris were arrested in Pushkar after intelligence agencies said Islamic fundamentalists were planning a terrorist strike during the world-famous fair which is visited by many foreigners.

"They are being interrogated but nothing tangible has come out till now," additional dgp (intelligence) Arun Duggar told a news agency in Jaipur. While three of them arrived in Pushkar yesterday from Kashmir Valley, another came from Goa, he said.

Ajmer superintendent of police Saurabh Srivastava said the residential status of the arrested persons is being ascertained. Meanwhile, security has been tightened and 3000 policemen and commandos deployed in Pushkar where a large number of roadside shops have sprung up selling various goods, including leather items, bed sheets, jewellery decorative pieces, etc.

Despite the US and British governments warning their citizens not to visit the fair in view of threat perception, officials said more than 1,000 foreign tourists have reached the fair and were seen enjoying camel rides and Rajasthani folk music.

Bureau Report