Someone wrote “KILL KILL KILL BLACKS” on a bathroom wall at Sligo Creek Elementary School in Silver Spring, Md.

An official with Montgomery County Public Schools said the racial message was discovered either Thursday or early Friday morning last week.

Maintenance personnel immediately removed the words.

MCPS is preparing to send out information to the school’s community. The school district did not say whether officials determined who wrote the message or whether an investigation is being conducted.