LUCKNOW, April 19 -- Uttar Pradesh Police arrested key accused Maijul in the Bijnor viral arms display case after he returned from South Africa on Saturday, with investigators linking the development to an alleged wider probe into cross border radicalisation and online networks.

Additional director general (Law and Order) Amitabh Yash said in a video statement that immigration authorities flagged Maijul's arrival at Delhi airport based on a Look Out Circular (LOC) issued against him, leading to his custody.

He said the alert enabled coordinated action between central agencies and state police, resulting in his immediate detention upon landing. Maijul, a native of Bijnor who had been living in South Africa for several years, was among th...