More than 450 people were killed in the unrest leading up to Hasina’s fall – 42 of whom were police officers, according to the national police chief.
Wazed alleged unidentified foreign forces had supported the protests, a claim for which he provided no evidence.
“I believe, at this point, it is from beyond Bangladesh,” he said.
“Only an intelligence agency would have the capability of smuggling and supplying weapons to protesters.”
It is not clear what Hasina will do next.
Wazed offered his “gratitude to the government of Prime Minister (Narendra) Modi for saving her life and keeping her safe”.
New Delhi saw a common threat in groups Hasina viewed as rivals and crushed with brutal force, including the BNP, according to analysts.
Hasina has been hosted in a secret safe house and hasn’t spoken publicly since arriving at a military airbase near New Delhi.
It isn’t clear how long she will now stay in India but Wazed said there “has been no such plans as of yet” of her moving to a third country.
“My mother never wanted to leave her country — her dream is to retire there,” he said, adding he spoke to her every day.
“This was going to be her last term. She’s 76 years old. And so she just wants to go back home. Whether she’ll be able to, we’re waiting to see.”