The city of Kyoto signed a contract to pay ¥1 million to a comedy duo to promote the city on Twitter, local officials revealed Monday, but the city is coming under fire after the pair posted messages without marking them as being promotional.

The two brothers, who form the duo Miki, made several posts in October 2018, but the tweets did not mention the relationship between the city and their agency, Yoshimoto Kogyo Co.

The agreement, signed in fiscal 2018 by the city and the agency, then known as Yoshimoto Creative Agency, was part of a larger promotional package whereby the city government would pay ¥4.2 million for the agency to form a group of artists to promote the city's cultural events.