Hosni Mubarak began the year as Egypt's president and one of the Arab world's most powerful men.

On Wednesday, he went on trial for murder and corruption, just months after the revolution that ended his 30 years in power.

Click here for our live blog on the trial

The former Egyptian president was wheeled into a courtroom on a hospital bed.

Along with his interior minister, Mubarak is accused of conspiring to kill anti-government protesters and stealing millions of dollars from the state exchequer.

His sons Alaa and Gamal are also on trial for corruption.

Outside the police academy, Mubarak's supporters and opponents threw stones at each other.

The clashes flared before, during and after the trial appearance.

Around 3,000 police were drafted in to maintain security.

Source: Al Jazeera