JK Rowling has challenged Scotland's new hate crime law in a series of social media posts - inviting police to arrest her if they believe she has committed an offence.

The Harry Potter author, who lives in Edinburgh, described several transgender women as men, including convicted prisoners, trans activists and other public figures.

She said "freedom of speech and belief" was at an end if accurate description of biological sex was outlawed.

Earlier, Scotland's first minister Humza Yousaf said the new law would deal with a "rising tide of hatred".