Special commandos of the Pakistan Army have been deployed outside Dawood Ibrahim's houses and after his henchman-turned-rival Chhota Rajan was arrested from Bali airport in Indonesia on 25 October.

Soon after the arrest of Rajan, Pakistan beefed up security for Dawood at his residences in Karachi and Islamabad, where he has been staying for more than two decades. But, the Pakistan government has always maintained that it has no knowledge of Dawood's whereabouts, PTI reported.

Dawood took shelter in Pakistan after the 1993 Mumbai serial blasts, in which 257 people were killed and hundreds were injured.  

Even Rajan, speaking to the media, said that Dawood is in Pakistan under the protection of Inter-Services Intelligence (ISI). 

Rajan's arrest poses a threat to Dawood's security as the Indian intelligence aims at getting information from the former to arrest India's most wanted underworld don (Dawood).

Rajan initially worked for Dawood; however, after the 1993 bombings, both separated their ways on bitter terms. Rajan even killed many of the accused of the 1993 blasts to portray himself as a "patriotic don", The Indian Express reported.

He was attacked by the Chhota Shakeel, Dawood's close aide, in 2000;but, he managed to escape with bullet injuries. Of late, Rajan had lately been assisting the Indian intelligence agencies to apprehend Dawood, according to reports.