A strange path of light spotted in the sky over Northern California has left witnesses asking what exactly they’ve seen. USA Today reports that some eyewitnesses in Redding reported seeing a circular item quickly drop in the sky early Wednesday evening before the streak in the sky appeared. Scott Carroll, a meteorologist with the National Weather Service in Eureka, said footage of the streak suggests it started in the sky and traveled down toward Earth, but he couldn’t say exactly what caused it. The NWS in Eureka suggested it might be a meteor, speculating on Twitter: “We’re thinking this might have been a #meteor sometime between 5:30 & 5:40 p.m.” Carroll agreed that it could have been a meteor, but said it could also be debris from a satellite. There were also unconfirmed reports of a possible aircraft crash and fire in the Fall River Mills area of Shasta County. The curvy pattern of the streak was most likely caused by shifting wind patterns, said Carroll.