Serena Williams, who was competing at the Berlin Open, was among a host of other tennis stars, who had to evacuate their hotel after a fire alarm went off in the middle of the night, at 3am.

While there was no damage, the 23-time Grand Slam champ, who has been given a singles wildcard entry to Wimbledon (June 29 to July 12), was forced out along with her two daughters Olympia and Adira. Coco Gauff and Alex Eala were also evacuated, according to British tabloid The Sun.