CLEMSON, S.C. - Baby powder has been identified as the white substance found on a letter that forced a brief closing of Clemson's post office last weekend, officials say.

Clemson Police Chief Jimmy Dixon said tests confirmed Monday the powder did not pose a threat, but was meant to make the letter smell good.

"A gentleman who was infatuated with someone here in the city of Clemson had mailed her a card and was trying to be romantic," Dixon said.

The substance found by a postal worker Saturday caused extra concern because it has been less than a month since the deadly poison ricin was found at a Greenville-area post office.

Dixon said the suspicious substance was found about 6:30 a.m. The office was opened about 9:30 a.m. after investigators were called.

"We had done a preliminary threat assessment Saturday and nothing indicated threat or malicious intent, so it was reopened," Dixon said.

Information from: Anderson Independent-Mail