Last Second shot

[kzooref]

At a varsity game the other day I watched three very experience officials end the quarter with one tenth of a second on the clock ruling that there was no time for a shot. The ball would have been taken out just under the basket of a team on their offensive end. I am sure this is wrong and that you can tip it with under 3 tents but annot catch and shoot with udner 3 tenths. Where do I find this is the rule book?