Delta State University shooting suspect 'kills himself'
A manhunt for a university professor accused of killing a colleague in Mississippi has ended after the suspect killed himself as police closed in.
Geography professor Shannon Lamb is suspected of shooting Ethan Schmidt, a history teacher at Delta State University, in the town of Cleveland.
Lamb had told police on Monday that he was "not going to jail".
Police also linked Lamb, 45, to the fatal shooting of a woman 300 miles away earlier that day.
Amy Prentiss, 41, was found shot dead at the home she shared with Mr Lamb in Gautier, Mississippi, in the early hours.
Police said they had not determined a motive for the killings.
At a news conference late on Monday, police in Gautier said they had initially contacted Lamb by phone, and later followed his car. After pulling over, he jumped out of the vehicle.
When officers gave chase they heard a single gunshot and found Lamb dead, Delta State University police official Lynn Buford told AP news agency.
Schmidt, who specialised in Native American and colonial history, was shot in his office, police said.
All campus buildings were then locked from the inside and officials advised people to shelter as police cleared students from buildings.
Freshman Noah Joyner, 18, said he stayed inside his dorm during the lockdown.
"There were people banging on the doors to have somebody let them in," he said. "It was pretty terrifying to hear people banging on the door."
Police helicopters circled the campus and hundreds of officers swept the buildings.
Lamb was apparently "easygoing" and had taken some leave recently for "personal reasons", colleague Don Mitchell told Fox News.
Roughly 3,500 students are enrolled at the university near the Arkansas border.