A white powdery substance delivered in an envelope to a Dublin resident was found to be harmless after a hazardous materials investigation Aug. 13.

The letter was mailed to a Dublin resident's post office box, and she opened it in her residence, said Lindsay Weisenauer, a Dublin senior public information officer.

According to Dublin Division of Police incident reports the woman brought the envelope to the Dublin Justice Center, and multiple jurisdictions including Dublin police, the FBI, the Northwest Area Strike Team and Franklin County Public Health were involved in the response.

The Dublin Justice Center and the woman's residence were quarantined the evening of Aug. 13 until testing helped officials determine the substance wasn't threatening.

Tests showed the powder wasn't a biological threat agent, Weisenauer said, and the substance might be wheat flour.

Weisenauer said other factors point to the powder's benign nature. The envelope didn't come with a note, for example, and those in contact with the substance didn't get sick, she said.

Although the substance was not determined to be dangerous, Weisenauer said the investigation is still open. Police are looking into who would have sent the envelope and why, she said.

In other recent Dublin police incident reports:

* A 27-year-old woman was cited for possession of drug paraphernalia Aug. 2 at Frantz and Rings roads.

* A 30-year-old woman was cited for possession of drug abuse instruments Aug. 2 in the 6500 block of Commerce Parkway.

* A Columbus woman at 1:27 p.m. Aug. 2 told police someone stole a $1,000 Apple Macbook Air laptop from a building in the 4000 block of West Dublin-Granville Road.

* A 37-year-old man was cited for possession of drug paraphernalia Aug. 1 in the 6000 block of Avery Road.

* A 22-year-old man was cited for marijuana drug abuse Aug. 1 at the Interstate 270 East ramp to Sawmill Road.

* A business in the 4300 block of West Dublin-Granville Road Aug. 1 told police a vehicle was stolen from its lot.

* A vehicle was reported stolen July 31 in the 7400 block of Sawmill Road.

* Police at 6:40 p.m. July 31 received a report of the theft of $3,000 of jewelry from a residence in the 8100 block of Campden Lakes Boulevard.

* A 28-year-old man was cited for marijuana drug abuse July 31 in the 5900 block of Britton Parkway.

* A 40-year-old man was arrested July 30 in the 6600 block of Shier-Rings Road for obstructing official business after police found two men suspected of stealing items from vehicles.

Police recovered $370 in stolen property and $10 in cash. Part of the property was from a report of theft that day from a motor vehicle in the 5700 block of Tynecastle Loop.

* A Delaware resident at 2:05 p.m. July 29 told police someone stole $240 in property including medicine and jewelry from her vehicle in the 6500 block of Perimeter Loop Road.

* A 19-year-old man was cited for marijuana drug abuse July 28 in the 5200 block of Emerald Parkway.

* A 25-year-old Dublin man was arrested for obstruction and resisting arrest following a traffic stop at 4:13 p.m. July 28 in the 6300 block of Frantz Road.

The man resisted officers when police tried to handcuff him while U.S. Immigration and Custom Enforcement officials came to take custody of the vehicle's passenger, who was wanted on a deportation warrant.