An aggressive promotional push for Justin Bieber's latest album has not proved popular with the city of San Francisco.
Officials demanded Monday that companies linked to the Canadian singer's campaign clean up ads spray-painted on sidewalks to publicize his album Purpose.
Graffiti that appeared in busy areas of San Francisco and other cities including New York gave the title and sometimes the album's November 13 release date.
Yet after more than a month that included rain, the ads remain visible with Bieber's entourage apparently using real spray-paint rather than chalk.
Dennis Herrera, who holds the elected position of city attorney, said that the guerrilla marketing campaign "illegally exploits" San Francisco streets and could cause dangerous distractions to pedestrians.