Whilst this was going on, the police I had alerted, they were on standby, and just as the concoction was ready, and they were about to give it to the kids, I phoned the police, and fortunately they came and busted them.
Mientras esto pasaba, los policías a quienes había alertado, estaban esperando. Y justo cuando se lo estaban por dar a los niños, llamé a la policía, y por suerte, vinieron y los atraparon.