What is the down?

[Rick Vietti]

Pop Warner game last Sat.

Team A - original offensive team
Team B - original defensive team

1st and ten. Team A passes, ball is intercepted by Team B, after the interception (change of possesion) Team B player is going back up the field, a Team A player (original offensive team) rips the ball out of the Team B players hand (change of possesion again) and is tackled.

White Hat went with 1st and 10 again for Team A based on a change of possesion. I say 2nd down and 15 from where the Team A player was tackled because the end of the down kills the play and not a change of possesion.

Which ruling is correct?