Free Throw

[ScifiREF]

Had this last night in a 7th grade boys A-Team game.

A1 is at the free throw line for a 1 an 1 shot. B1 is behind the 3-point line. B1 take a running start and tries to time the ball hitting the rim before he crosses the 3-point line for the rebound.

Question: Can B1 take a running start or does he have to stay in a spot until the ball hits the rim.

What the call?

In this game he crossed the 3-point line before the ball hit the rim. Tweet! Line Violation!