Sikhs youths in the United Kingdom are being "radicalised" in classes held in gurdwaras, where they are also being trained to make bombs, intelligence agencies have told the Modi government.

The intelligence report, which has been reviewed by the Hindustan Times, revealed that between December 2014 and January this year, several "radicalisation" classes were held for Sikh youths in at least three gurdwaras in the UK.

The intelligence report also states that in these special classes, Sikh youth were also being trained to make improvised explosives.

A report in The Times of India revealed that some of these classes were conducted by radical elements such as Avtar Singh Khanda, vice-president of Shiromani Akali Dal (Mann), terrorist Jagtar Singh Hawara and Babbar Khalsa International-UK's Paramjit Singh Pamma.

The report comes at a time when Prime Minister Narendra Modi is on a three-day visit to Britain. A senior Indian official told Livemint that India will raise the issue with the UK as Pakistan's Inter Services Intelligence (ISI) is working with groups based in Britain to "radicalise" Sikh youths and raise funds for terror activities to be carried out in India.  

Prime Minister Modi's trip to the UK has been marred by protests, mainly orchestrated by several groups who have joined hands with the UK-based NGO, Aawaz Network, which is supporting Dal Khalsa-UK, a group that was temporarily banned in 1982 for indulging in terror activities. 

However, the group, since 2007, has been leading a campaign to ban the Rashtriya Swayamsevak Sangh (RSS) in the UK.