Indian police detained the head of the satirical "cockroach" online movement on Saturday, the group said, ahead of a major protest against the Election Commission that triggered strict security measures. India has launched a security crackdown in New Delhi, detaining thousands of protesters from the "Cockroach" movement who intended to hold a mass demonstration. Key points and original sources are listed below.

• Indian police detained the head of the satirical "cockroach" online movement on Saturday, the group said, ahead of a major protest against the Election Commission that triggered strict security measures. Our correspondent Navodita Kumari tells us more.S1

• India has launched a security crackdown in New Delhi, detaining thousands of protesters from the "Cockroach" movement who intended to hold a mass demonstration.S2