A Melbourne teenager allegedly discussed packing a kangaroo with explosives, painting it with an Islamic State symbol and setting it loose on police officers.

Sevdet Ramadan Besim, 19, of Hallam, is accused of plotting an Anzac Day terror attack in Melbourne that would have included a beheading.

Sevdet Besim after his arrest in April. He is accused of plotting an Anzac Day terror attack in Melbourne that would have included packing a kangaroo with explosives and beheading a policeman. Credit:Wayne Hawkins

He was committed to trial in the Supreme Court on Thursday after pleading not guilty to four charges.

They included conducting internet searches of Anzac Day in Melbourne and Dandenong, engaging in communications and creating an electronic memo on his phone - all in preparation for a terrorist act.