It tells officers not be deterred if they see a "squatter's rights" notice on the door as "the police have lawful authority under section 17 of PACE (the Police and Criminal Evidence Act) to enter the property to make an arrest".

BBC: Q&A: Squatting laws

One federal law that seems to prohibit online, pay-to-enter NCAA Tournament pools is the Interstate Wire Act of 1961.

FORBES: Are NCAA Tournament Bracket Pools Legal?

Theo Bela, a spokesman for a Christian forum in Jakarta, said that the person behind the act posed as a pilgrim to enter the cave where the shrine is.

BBC: Indonesia attack: Catholic shrine vandalised in Java