Okay, was doubling checking source on this and found I was mistaken. What Bertolino actually said was that he saw JT say he knew exactly where Brian was and he phoned the Laundries to find out if they knew. They said no. Bertolino thought perhaps Brian had been picked up by LE. But they did not reach out to LE at this time. However, it should be noted, at this point, as far as the Laundries and their lawyer knew, LE knew exactly where Brian was because NPPD just said so!
Source is the Banfield interview starting at 24:37. Here: