Police in Australia say they have arrested five men on suspicion of plotting terrorist attacks on police officers.

Australian Federal Police and Victoria state police say the suspects include two 18-year-olds who are alleged to be preparing an attack in the country including targeting police.

Another 18-year-old has been arrested on weapons charges and two other men, aged 18 and 19, are in custody and assisting police.

The arrests took place in Melbourne where a joint counterterrorism team served a total of seven warrants Saturday morning. Police say they are conducting searches at properties.