A long crack has appeared on Smith Street in Woodbridge, New Jersey, leaving officials puzzled as to what caused it.

The fissure stretches between Highland Avenue and Convery Boulevard, near the border of Woodbridge and Perth Amboy. Local authorities have yet to determine the origin of the damage, which has drawn attention from residents and commuters in the area.

CBS News New York’s Jenna DeAngelis reported on the unusual development, noting that engineers and public works crews are monitoring the site to ensure the roadway remains safe for drivers.

For now, the cause of the crack remains a mystery, with officials urging caution until a full assessment is complete.