The National Investigation Agency (NIA) has made a significant arrest in the case related to the attack on the Indian High Commission in London last year. Inderpal Singh Gaba, a UK resident, was arrested for his involvement in unlawful activities during protests on March 22, 2023. The NIA's investigations suggest that the attacks were part of a larger conspiracy against Indian missions and officials, triggered by actions against a pro-Khalistani separatist. Further inquiries are ongoing.