A Medford teenager suspected of being the artist behind numerous graffiti displays around the city has caused at least $50,000 in damage, police say.

A Medford teenager suspected of being the artist behind numerous graffiti displays around the city has caused at least $50,000 in damage, police say.

Police from the Medford Area Drug & Gang Enforcement task force served a search warrant on Kevin Ammerman, 19, of the 200 block of Mt. Echo Drive, Tuesday after a long investigation of reported graffiti. The investigation began in June 2011 and found hundreds of instances of the graffiti, or "tags," in White City and Medford.

Police say Ammerman's targets included the Bear Creek Greenway and businesses in White City and Medford.

The tags included consistent uses of symbols such as "1 x 1," "DFA," "SKROW," "FTP" and "WW III."

The "1 x 1" symbol refers to a small gang in the Eagle Point and White City area, police said, but not one that poses any serious threat to the community beyond acts of vandalism.

"(They're) doing a lot of graffiti and not a whole lot else," said Lt. Brett Johnson of MADGE. "It's really turned into a tagging team."

Police said Ammerman used to be part of the group before moving to Medford and continuing to tag on his own.

"DFA" stands for "down for anything" while "FTP" is an obscenity directed at police, and "SKROW" is Ammerman's moniker. "WW III" appears to have no significant meaning, police said.

The investigation led police to Ammerman's home, where they seized photos, drawings and other evidence related to the graffiti. He was lodged in the Jackson County Jail on five counts of first-degree criminal mischief, a felony. He was being held on $25,000 bail.

"He's really wreaked havoc here in Medford," Johnson said.

A 17-year-old girl was cited and released on similar charges. Additional felony charges are pending, and the investigation is continuing. Additional suspects could be identified at some point, investigators said.

Ammerman does not have any criminal history as an adult, court records show.

Reach reporter Ryan Pfeil at 541-776-4468 or email rpfeil@mailtribune.com.