Pictures posted on social media on Saturday showed that the glass on one side of the clock had been broken, police said. They are working to determine if someone intentionally damaged the watch. A team of medical examiners met in Gastown on Sunday to gather evidence, and investigators are investigating the area for witnesses and security plans, police said. In a statement, the city of Vancouver said staff were protecting the area around the well-known tourist attraction and assessing the damage to determine the next steps. The city said it would release more information in the coming days. The clock was built in 1977 as part of the city’s effort to revive the historic downtown neighborhood.