Updated

Chaos has erupted as security forces ushered former Chadian dictator Hissene Habre into and then out of the Senegal courtroom where he faces charges of war crimes and crimes against humanity following a protest by his supporters.

Lawyers for Habre said court officials forcibly led him to the courtroom Monday to participate in the trial, which he has denounced as politically motivated.

As he entered wearing a white robe, his supporters started yelling, prompting security officers to surround him and carry him out.

Habre is accused of overseeing widespread human rights abuses during his rule from 1982-1990.

Human Rights Watch says the trial beginning Monday is the first in the world in which the courts of one country prosecute the former ruler of another for alleged human rights crimes.