The images, particularly Kurt Westergaard, sparked a huge wave of anger in the Muslim world and escalated into violent anti-Denmark protests by Muslims worldwide in 2006.
For a powerful government to perceive a cartoon as a threat is either a sign of fear or intolerance of criticism.
Twitter sends notices to cartoonist Manjul, other prominent users on requests from law enforcement agencies
Mohammed Zubair and Surya Pratap Singh also shared screenshots with similarly worded notices from Twitter on their own accounts.
The teacher in question has since been suspended pending an investigation, with Head Teacher Gary Kibble apologising "unequivocally".
A large number of people yesterday was seen thronging to the pandals for the worship of Goddess Saraswati on the occasion of Basant Panchami.
Since March, most kids have spent time holed up at their homes, either attending online classes or flipping cartoon channels on their TV screens.