A couple of men stole from donation boxes in Brockton, MA .
Cops got tipped off someone had been stealing from a donation box about once a week.
The box was full of items for needy families.
When cops figured out who did it, they caught up with the thief and escorted him out of town… but there was only one guy in the van.
The other thief was still inside the donation box.
He called the fire department from inside the box to get help.
They came and cut the lock off the box and then arrested him.