India has demanded the arrest and prosecution of the pro-Khalistan people involved in pulling down the national flag at its embassy in London. India has also demanded that the UK government bump up security at the High Commission to prevent such episodes in future. Today, Foreign Secretary Vinay Kwatra said the UK deputy Chief of Mission was summoned and India demanded an explanation and quick arrest and prosecution of the miscreants. The need to put up adequate security at the High Commission was also underscored, he told reporters.