Video of Possible UFO Recorded by Pennsylvania Woman Stephanie Wilkerson says she is now a UFO "believer."

 -- A Pennsylvania woman who captured what she insists was an unidentified flying object on her cell phone camera says she is “scared to death now.”

A couple police officers also say they saw the UFO that night.

Stephanie Wilkerson says she was relaxing on her porch in Lower Paxton Township, Pa., Monday night when she spotted an object in the night sky.

“I thought it was a plane until I realized it wasn’t moving,” Wilkerson told ABC News. “I watched it for about 20 minutes and I started noticing it changing colors.”

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Wilkerson grabbed her cell phone to record the mysterious object and also called her neighbor over to verify what she was seeing.

“He went and got his binoculars because he first thought it was a planet,” Wilkerson said. “Then he said, ‘No, it changed yellow. That is not a planet.’”

Wilkerson also called 911 but when an officer arrived at her home, even he could not explain the mysterious objects in the sky.

“He went there and apparently he saw them too so he called his sergeant and his corporal to come and verify what he was seeing,” said Lower Paxton Township Police Lt. Gary Seefeldt.

Authorities contacted both the local airport and the National Guard training center, but neither had records of any flight activity that night.

Wilkerson says she saw the mysterious lights again Wednesdy night and a neighbor reports seeing the UFO last week as well, she said.

“For me to see that, I am now a believer in UFOs,” Wilkerson said.