LONDON — In East London, leaflets urging Muslims not to vote have been picked up by several observers.

The leaflets warned that voting for “manmade law” is “shirk,” associated with worshiping more than one deity, and that “democracy is a system whereby man violates the right of Allah,” The Telegraph reported.

Poplar residents woke up to these leaflets on their cars this morning: pic.twitter.com/N4ix6ulR9n — AlexisFlynn (@AlexisFlynn) May 7, 2015

Found on Crisp Street just metres or in my case yards from a polling station in East London. pic.twitter.com/caLxUvdPNW — Patrick Wintour (@patrickwintour) May 7, 2015

Anjem Choudary, a radical Muslim cleric who advocates the introduction of Sharia, or Islamic law, in Britain, has been urging people not to vote, saying that it was “strictly forbidden” by Islam, The Huffington Post reported last month. He has been posting on Twitter actively, claiming ownership of the leaflet campaign and using the hashtag #staymuslimdontvote.