The packet has been sent to a chemical testing laboratory and the cyber crime branch has been roped in to investigate the matter, Inspector General of Police, Ujjain Range, B Madhukumar told PTI here.
Besides the bag, a mobile handset and some identity cards were also found in the room of Atishay Hostel situated near bus stand under Nankheda police station area here yesterday, he said.
Subsequently, the police swung into action last evening and found the bag, mobile phone handset and identity cards from the room during search, the IG said.
Madhukumar said that the room, according to the hostel records, was booked in the name of one Sazid, son of Wahid Khan, a resident of Agar-Malwa district.
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The ID based on which the room was booked might be fake, he said.
The room was booked and occupied on March 18. The occupant left it after a while saying that he will return by around 10 PM. When he did not return till yesterday, the hostel owner got worried and informed the police.
However, police are not taking any chances and are investigating the matter.
"We are analysing the recovery of stuff from all angles," the IG said.