The British Museum was briefly evacuated Saturday after staff discovered what was described as a “suspicious device” inside a restroom, prompting a police response at one of the world’s most visited museums.

The Metropolitan Police were called to the museum’s Bloomsbury headquarters around 2:50 p.m. local time after reports of a suspicious package, according to The Independent. Officers investigated the object and later determined it posed no threat. Visitors were allowed back into the museum shortly after 4 p.m. and normal operations resumed.