International pop star Rihanna on Tuesday extended her support to the farmers protesting on the outskirts of Delhi against the centre's agricultural laws, condemning the internet shutdown aimed at crippling the movement.

"Why aren't we talking about this?! #FarmersProtest," tweeted the 'Don't Stop The Music' singer, who has more than 100 million followers on Twitter, along with a news article about the internet blockade.

The tweet sent the singer trending on Twitter with thousands of responses including one from actor Kangana Ranaut, an ardent supporter of the ruling BJP who has made no bones about her strong dislike for the farmers' protest that has challenged Prime Minister Narendra Modi.

Internet services in the Delhi border areas of Singhu, Ghazipur and Tikri - epicentres of the farmers' months-long protest against the centre's agriculture laws - were suspended on Saturday and the shutdown has been extended twice to be in force till at least 5 pm Wednesday.

The order by the Home Ministry had come over the weekend, days after sections of a tractor parade in Delhi by farmers on Republic Day strayed from agreed routes, triggering clashes with the police that left dozens injured and one protester dead.

Following the violence last week, the Uttar Pradesh government ordered the removal of protesters from Ghazipur - which lies on the Delhi-UP border. They were ordered to leave by Thursday night.

Authorities have also dug up roads, erected massive, multi-layered barricades at several places to block farmers from reaching the heart of Delhi again.

However, they refused to budge and demonstrations grew after a tearful outburst by farmer leader Rakesh Tikait who claimed he was "ready to face bullets" if needed.

Rihanna also tweeted about the coup in Myanmar on Tuesday, highlighting a post by Human Rights Watch and writing, "my prayers are with you #myanmar!"