Qld to boost security on public transport

A plan to boost security on Queensland's public transport network is not linked to the G20 or Australia's heightened terror threat level, the state government says.

Premier Campbell Newman and Transport Minister Scott Emerson are due to make an announcement about public transport security on Monday afternoon.

A spokesman for Mr Emerson says it's about cracking down on anti-social behaviour and fare evasion, and is unrelated to next month's G20 meeting or the high terror threat level.