The Austin Public Library is facing estimated repair costs of more than $800 following weekend damage to the building’s fountain and one of its windows.

According to a complaint, Austin police received a report Tuesday morning of one of the northwest windows being broken and damage to its granite water fountain on the west side of the building. Officers allegedly found a rock sitting near the broken window that was similar in size to the half-inch hole in the window’s outer pane.

Officers believed the damage was done over the weekend. A group of teenagers was allegedly kicked out of the library earlier, though it is unknown whether they had any part in the damage.

Repair costs for the water fountain are estimated between $200 and $250. The window’s replacement could cost about $640.