Racist text messages invoking slavery raised alarm across the country this week after they were sent to Black men, women and students, including middle schoolers, prompting inquiries by the FBI and other agencies.

The messages, sent anonymously, were reported in several states, including New York, Alabama, California, Ohio, Pennsylvania and Tennessee. They generally used a similar tone but varied in wording.

Some instructed the recipient to show up at an address at a particular time ā€œwith your belongings,ā€ while others didnā€™t include a location. Some of them mentioned the incoming presidential administration.

It wasnā€™t yet clear who was behind the messages and there was no comprehensive list of where they were sent, but high school and college students were among the recipients.

The FBI said it was in touch with the Justice Department on the messages, and the Federal Communications Commission said it was investigating the texts ā€œalongside federal and state law enforcement.ā€ The Ohio Attorney Generalā€™s office also said it was looking into the matter.

Tasha Dunham of Lodi, California, said her 16-year-old daughter showed her one of the messages Wednesday evening before her basketball practice.