The Limerick player was spotted unusually with a phone in his hand after coming back out onto the pitch in the second half.
Limerick walked away victorious on Sunday afternoon after beating Galway in the National Hurling League 0-24 to 0-19.
The Munster side looked phenomenal again with Kyle Hayes putting in a standout performance in the first half but some eagle-eyed supporters spotted something unusual as he came back out in the second half.
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Hayes had a phone in his hand and was seen running over to give it to the umpire.
It is still uncertain whether it was in fact his own phone or if he just found it on the pitch.