Establishing just how reliable a tip-off is must be a tough task for our police officers.
Do they dismiss the intelligence as suspect and risk a threat to public safety or do they go on high alert when it may be a false alarm?
This would have been the dilemma facing Napier police on Wednesday when they locked down Faraday St after reports that a large cache of AK-47 rifles had been spotted at a house on the street.
Napier residents could be forgiven for thinking they were facing another Napier siege when police set up a roadblock that prevented locals from entering or leaving the street between 3.25pm and 5.30pm.
In the end it turned out to be nothing more than a stash of AK-47 replicas. Police have decided not to take any further action, but they must have been expecting the worst because the Armed Offenders Squad also attended the incident.