Officials are considering "all possibilities" as they investigate offensive graffiti discovered last week at a Gwinnett County high school.

The graffiti, discovered early Nov. 22 at Suwanee's Collins Hill High, covered sidewalks, football stadium signage and at least five trailers. Included were slurs directed towards gays, blacks and Hispanics, as well as a swastika and references to president-elect Donald Trump and his pledge to build a wall along the United States' border with Mexico.

The school system has pledged "to find out who is behind this damage and prosecute them," but Gwinnett County schools spokeswoman Sloan Roach said Monday that there were no new developments in the case.

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Photos of one piece of graffiti that alluded to a rival high school's mascot circulated widely on social media last week, leading some to theorize that students from that school were responsible.

On Monday, however, Roach wrote in an email that "there were some other team names used as well." She said Gwinnett County schools police "will look into all possibilities."

The vandalism at Collins Hill is at least the second racially charged incident at a Gwinnett County school since Trump's election earlier this month. On Nov. 11, a Muslim teacher at Dacula High School reported finding a note in her classroom that urged her to hang herself with her headscarf.

Roach said Monday there were no updates in that case.

A significant number of similar incidents have also been reported across the country — and elsewhere in metro Atlanta. At DeKalb County's Cross Keys High School, two teachers have been removed for making disparaging remarks about undocumented residents.