That's bull crap. When those 3 guys admitted to ahving been with Natalee the ngiht before she disappeared, the police should have gone through all of their houses. When they said 'something bad happened to her' they should have been the primes suspects and brought in for detailed questioning, not the security guards!
... while locking up two patsy SG's to take the rap, interviewing them once while incarcerated and again pending their release.