Jimmy Farrow said he'd been told that the first night.
"They said there was a high-powered weapon and a low-powered weapon,” Jimmy Farrow said. "One of the TV stations showed shell casings piled up in the road where it happened.”
Jessica Brown, OSBI spokeswoman, said ballistics examiners confirmed the use of two weapons.
Investigators are also screening a computer that Taylor used at the Placker home, Brown said.
Agents are hoping a $25,000 reward might lead to information that will crack the case. Local banks and community members contributed $5,000 toward the reward.
Investigators think killers were familiar with area
Officials think the slayings may have been committed by people from the local area or who are familiar with the rural Okfuskee County roads.
"That's my gut feeling,” Rosser said. "It's an isolated area. We don't know if this is some kind of random thrill killing or an attempted abduction or a case of mistaken identity. It's possible they may have interrupted something at the bridge.”
The bridge along County Line Road is a popular place for teens to gather and shoot guns, Rosser said.
Agents looked into a tip Wednesday morning that someone reported a pickup full of boys in the area around the time of the killings.
"We contacted those individuals, and yes, they had a shotgun,” Rosser said. "They told us they were down there shooting, just like they would have been on any Sunday. There's nothing to indicate that they are suspects.”
The Placker family previously said Taylor and Skyla walked to the bridge about 5 p.m. Sunday.
When they didn't return and could not be reached by cell phone, Peter Placker went looking for them and found the bodies. He called 911 using Taylor's phone.
Wednesday, Joe Mosher, Taylor's great uncle, said the family is distraught and not interested in talking to the media.
Funeral services for Taylor will begin at 10 a.m. Friday at Dewar First Baptist Church. Services for Skyla will begin at 2 p.m. Friday at the First Baptist Church in Henryetta.
Shurden Funeral Home in Henryetta will handle funeral services for Taylor, and Rogers Funeral Home, also in Henryetta, will handle services for Skyla.
Guest book: Taylor Dawn Paschal-Placker
Guest book: Skyla Jade Whitaker