i m rob nelson. and i m diana perez, in for paula faris. we begin with the deadly highway attacks that have mississippi drivers thinking twice before getting behind the wheel. two people have been murdered. and the killer play be driving what looks like an unmarked police car. abc s tahman bradley has the latest. reporter: police are urging drivers in mississippi state to be on alert. as police look for a shooter that may be posing as a police officer. this morning, local and state police, along with federal law enforcement, are launching a massive manhunt in mississippi to find this person, who may be pulling cars over by the side of the road and killing the drivers. we re going to hunt this person down. in these times, it s best to be precautious, if you re traveling. reporter: last tuesday, thomas schlender was driving along this remote stretch in northern mississippi. he was shot and killed. this is a violent end to a kind man s life. reporter: 50 miles aw
and good morning, everyone. i m rob nelson. and i m diana perez, in for paula faris. we begin with the deadly highway attacks that have mississippi drivers thinking twice before getting behind the wheel. two people have been murdered. and the killer play be driving what looks like an unmarked police car. abc s tahman bradley has the latest. reporter: police are urging drivers in mississippi state to be on alert. as police look for a shooter that may be posing as a police officer. this morning, local and state police, along with federal law enforcement, are launching a massive manhunt in mississippi to find this person, who may be pulling cars over by the side of the road and killing the drivers. we re going to hunt this person down. in these times, it s best to be precautious, if you re traveling. reporter: last tuesday, thomas schlender was driving along this remote stretch in northern mississippi. he was shot and killed. this is a violent end to a kind man s l