Police closed Clacton Library and shut surrounding roads following a security alert this afternoon.
The building, on Station Road, was evacuated while officers conducted a search of the premises from around 11am today.
But the alert was deemed false around three hours later and the cordon subsequently lifted.
The force earlier alerted users and residents: "Police are searching Clacton Library following a security alert at 11am Thursday.
"As a precaution, a safety cordon is in place."
