The American League club stated Tuesday that three people were injured at an Oakland Athletics match by "celebratory Fourth of July gunfire".
Oakland police responded to RingCentral Coliseum Monday night after a fireworks display and "located 3 fans struck by bullet fragments during what appears to have been celebratory gunfire throughout the city," the team stated in a statement.
The fourth victim was also injured and went to the hospital by himself. The A's assured that all four of them will be able to recover from their injuries.
According to the statement, the A's offer a $20,000 reward for information that leads to an arrest.
Oakland defeated Toronto Blue Jays 5-1 Monday in front of 24,403.
The team is the last in attendance and wants to build a new waterfront stadium. If a new Oakland stadium is not possible, the team has been openly looking at Las Vegas as a possible new home.