The manhunt for Lembrick had intensified Thursday morning with more than 200 law enforcement officers across multiple agencies joining the search.
Minquell escaped after the shooting near Georgia Southwestern State University on Wednesday morning, and was considered armed and dangerous, authorities said. Overnight, officials raised the award for Lembrick's arrest to $70,000.
Authorities said Lembrick fatally shot Americus police Officer Nicholas Ryan Smarr and wounded university police Officer Jody Smith at an apartment complex at about 9:40 a.m. ET on Wednesday near the campus in Americus, which is in Sumter County about halfway between Columbus and Albany.
Smarr, 25, was responding to a call for a domestic disturbance when he was shot, police said. Smith, who was providing backup, was flown by medical helicopter to a trauma center in Macon. As of Thursday morning, Smith was out of surgery but remained in critical condition.
Police said the two officers had been best friends since high school and went to the same police academy together.