A fourth incident of a swastika being found on paper in the U.S. Mail has been reported.

According to the Austin Police Department, a resident living in the 800 block of 23rd Street Southwest reported finding a brown piece of paper with a swastika drawn upon it.

The incident was reported to the Austin Police Department Friday.

According to the report, it was found in the resident’s mail box beneath other pieces of U.S. Mail.

No other message was on the paper.

All four incidents remain under investigation.