illegal player

[rocky50]

High School Rules apply.

The score is tied at the end of regulation play. We are ready to start overtime play. The clock is set and all the players are on the court ready for the tip. I am standing at center court ready to enter the circle and toss the ball. Before I enter the center circle the red coach hollers to me that one of the blue team players is illegal. I walked over to the coach to get an explaination and he told me that the blue player had fouled out in the 3 quarter of regulation play. I didn't remember if that was true so I ask the blue team coach if it was and she said yes. I gave her a technical and explained why.
My question to you is, was I correct in giving her a technical with the events that I described or does the ball have to be put in play before I issue a technical.