National Investigation Agency (NIA) of India, while probing activities of the banned militant group Jamaat-ul-Mujahideen Bangladesh (JMB), has arrested a man for allegedly propagating "jihad against India".

Ali Asgar alias Abdullah Bihari – a resident of Siswaniya village in the Indian state of Bihar – is the seventh accused arrested in connection with the probe, reports our New Delhi correspondent quoting a statement by the NIA.

He was arrested on Wednesday from Bihar.

Asgar was a close associate of the other six accused, including three illegal immigrants from Bangladesh arrested earlier, and "was found using encrypted applications to communicate secretly with other associates in India and Bangladesh," the statement said.

The case is related to the arrest of six active JMB members from Aishbagh locality in Bhopal, capital city of the central Indian state of Madhya Pradesh, who were found involved in propagating JMB's plans or ideology and motivating youngsters to carry out "jihad" against India, the statement added.

"Asgar is a highly-radicalized individual involved in propagating jihad by posting hate and incriminating materials online in various groups on social media platforms," the NIA statement also added.