An Australian man described by prosecutors 

as an obsessed anti-abortion protestor

 has been found guilty of murder in a shooting

 to death of security guard in the Melbourne clinic.

 In July of last year Peter James Knight carried

 the first ever attack on an abortion clinic of Australia. 

He faces a maximum penalty of life

 imprisonment and expected to be sentenced today

 by the Supreme Court.

 Knight entered the busy clinic with a rifle

 and 40 rounds of ammunition concealed in a bag.

 He said the shooting of the guard was an accident,

 but prosecutors said he planned to kill the staff 

and patients.