TAMPA — Three siblings accused of shooting at a Zephyrhills police car Tuesday morning are now wanted by the FBI for robbing a southern Georgia bank less than six hours later.
The new arrest warrants were announced Thursday evening as authorities also investigated a puzzling lead — that parts from a gun perhaps used in the Zephyrhills shooting were stashed in a women's bathroom at Tampa International Airport.
During the 12:24 p.m. bank robbery in Valdosta, Ga., the siblings, wearing masks, fired into the ceiling, the FBI said. One had an AK-47-type assault rifle and another had a machine pistol.
The three fled the bank in a 2006 white Subaru Impreza — the same type of car involved in the Zephyrhills shooting earlier that morning.
"We hope for a peaceful resolution and the suspects turn themselves in, but understand that these fugitives are on a violent mission and must be stopped by any means possible," said Pasco County Sheriff Chris Nocco and Zephyrhills police Chief David Shears in a joint statement.
Authorities are looking for Ryan Edward Dougherty, 21, Dylan Dougherty Stanley, 26, and Lee Grace E. Dougherty, 29, all of whom lived in Pasco.
Officials say the Dougherty siblings have a stockpile of weapons, including an AK-47 purchased a few years ago.
At Tampa International, six gun parts — a firing pin and magazine for an AK-47 and four slides for a Glock — were discovered about 7:30 a.m. Wednesday by a janitor who thought a garbage bag in a women's bathroom seemed heavy.
"We are looking to see if there's a relationship between what was found at Tampa International Airport and the ballistic shell cases and evidence we found at Zephyrhills," said Doug Tobin, a Pasco sheriff's spokesman. "At this point we haven't made that determination."
The manhunt began just after 7 a.m. Tuesday. A Zephyrhills officer attempted to pull over a white 2006 Subaru Impreza for speeding, but the car accelerated, and someone inside started shooting.
The officer continued pursuing the car, but a bullet hit the cruiser's left front tire at Morris Bridge Road and State Road 54, about 4 1/2 miles from where the chase began.
The officer was not injured. But the suspects escaped.
Investigators said they discovered a number of high-caliber gun shells at the scene. Tobin declined to say whether the shells were from an AK-47.
The FBI has joined the search.
"We just want to make sure we cover all our bases as we try to get these dangerous individuals off our streets," Tobin said. "We're putting a tremendous amount of resources into locating them."
Airport officials said that after discovering the gun parts at the airport, they searched nearby and didn't find any more. Airport spokeswoman Brenda Geoghagan declined to say whether officials were also reviewing security footage.
"At this point, we don't know where the gun came from," airport police Assistant Chief Ciro Dominguez said at a press conference Thursday.
The firearm parts found in the restroom did not get past airline security, Geoghagan said. The bathroom is publicly accessible on the third floor of the airport.
Eric P. Newcomer can be reached at (813) 226-3401 or [email protected]