Update 2.43 pm

Wan Azizah was at the city police headquarters by 1.30pm, followed 25 minutes later by Anwar's daughter Nurul Izzah and her husband Raja Ahmad Shahrir.

"I don't believe this is happening. We will seek to get him released as soon as possible," said DAP chairman Karpal Singh, who had joined other PKR members and supporters gathering at the headquarters.

The police had on Tuesday given Anwar a 2pm deadline to answer allegations of sodomy.