[Peach State Ref]

Situation at a game I witnessed recently -

A1 has 2 free throws, the lead throws the ball to the shooter without noticing that there is only one defender occuping 1 of the 2 low blocks.
A1 misses 1st free throw. Is this a violation or delay of game? Is the 1st attempt readministered?

Please reference NFHS rules & case plays