It also said the high alert remained in place in the aftermath of the Holey Artisan Bakery incident in Dhaka.
"We have got intelligence reports that some people were sighted along Meghalaya-Bangladesh border. Some went to Bangladesh and some stayed back. Their activities looked suspicious," DGP Mukesh Sahay told a press conference here.
He, however, said these reports are "uncorroborated" and "unverified" till now and Assam Police is investigating about the same.
"We are in constant touch with all neighbouring states' police, BSF and central agencies. The Assam Chief Minister reviewed the situation today. We are extremely alert," he said.
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He said the Assam Police and other intelligence agencies are in "full control" of the situation at present.
"We will not take any chance. Whatever information we get, we are taking them very seriously and then verifying those," Sahay said, adding agencies are keeping a watch on cyber space as well.
On the JMB model, the top cop said 48 people were arrested in Assam during the last two years, of whom 45 have got bail.
"We are looking for 2-3 more jehadis of the JMB model. They managed to flee," he added.