"The anonymous letter, written in Hindi, has also threatened to set off explosions on the same day at a local Shiv Sena office, Shiv Sena Bhawan at Dadar in Mumbai, the residence of Thackerays, 'Matoshree', the place of cremation of Bal Thackeray on Shivaji Park ground in Mumbai, besides famous Khajrana Ganesh temple in Indore," acting Executive Officer of Shirdi Trust Ajay More said.
"The Shirdi Trush handed over the letter to us yesterday. We have formed two teams to investigate the matter and also increased security at the temple," said Ahmednagar SP Raosaheb Shinde.
Following the letter, the temple trust has imposed a ban on its employees carrying mobile phones in and around the temple, More said.
Meanwhile, security has also been stepped up at Khajrana Ganesh temple in Indore and the entry of devotees in the sanctum sanctorum is banned by the management there.
Khajrana Ganesh Temple administrator Manish Singh said a search was carried out in the temple premises by a sniffer dogs squad but no suspicious object was found.