Pathak (58) died of a massive heart attack while holidaying with his family at a beach resort in southern Thailand.
"His (Pathak's) body is expected to be flown in later tonight," in-charge DGP Pramod Kumar told PTI.
The mortal remains of the deceased will be kept at IPS Mess, Dufnala, Shahibaug here tomorrow between 8:45 AM and 10 AM for the general public to pay their last tributes.
"Pathak will be cremated tomorrow at 10:30 AM at AMC crematorium near V S Hospital, Ellisbridge, here with police honours," said a statement issued by the DGP office.
Pathak, who hails from Uttar Pradesh, was appointed Director General of Police of Gujarat on February 27 this year. He was due to retire in February 2015.