Lahore, Nov 2 (PTI) Pakistani authorities have put in place tight security measures to ensure the safety of pilgrims, including over 1,500 Sikhs from India, visiting the country to celebrate the birth anniversary of Guru Nanak.

Foolproof security measures have been adopted to cope with any untoward incident during festivities beginning today in Guru Nanak's birthplace of Nanakana Sahib, said district police chief Masroor Ahmed Kalachi.

Additional policemen had been brought in from other districts for the three-day celebrations in Nankana Sahib.

"Around 1,000 constables and 200 officers have been deployed in and around Gurdwara Janamsthan and six other gurdwaras in the city," he said.

Police pickets have been set up at all entry points of Nankana Sahib and other important places.

Walk-through gates have been installed at the entrance of all gurdwaras and metal detectors are being used to search all visitors to the shrines, Kalachi said.