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PANOLA COUNTY, Miss. – Investigators in the Jessica Chambers case are reportedly exploring the possibility that someone might have aggressively confronted the teenager at a gas station a week before her death.

District Attorney John Champion confirmed gas station worker Ali Alsanai, who has received death threats, is cleared in this case.

Alsanai gave police surveillance video that showed Chambers only hours before her death, and some people online accused him of doctoring video or knowing too much about the crime a short time after it happened.

Alsanai denies altering the video and claims investigators told him about Chambers’ death.

He told WREG investigators recently returned to his gas station, asking him about a possible altercation in the parking lot involving Chambers a week before she died.

“I told them I wasn’t there that day,” Alsanai said.

Alsanai explained that investigators told him the altercation allegedly happened in the morning sometime about a week before she died.

He said he usually doesn’t work in the mornings, and he didn’t know anything about an attack or fight.

Champion said he cannot comment about specific aspects of the investigation.

There are still no official suspects in the case.

Someone fatally lit Chambers on fire along Herron Road, off Highway 51, a week and a half ago.