The latest on the killing of an on-duty Shreveport police officer (all times local):

1:20 p.m.

Police in Jackson, Mississippi, are on the lookout for the suspect in the killing of a Shreveport, Louisiana police officer.

Colendula Green, public information officer for the Jackson Police Department, said the department was asked for help in locating 27-year-old Grover Cannon, who is wanted in connection with the fatal shooting of Police Officer Thomas LaValley.

LaValley was shot and killed Wednesday while on duty in Shreveport, Louisiana.

The Jackson Police Department says officers are paying especially close attention to buses arriving from Shreveport.

"Once we were notified, we jumped on it immediately to assist," said Green. Jackson is about 220 miles east of Shreveport.

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12 noon (EDT)

The mayor of the city of Shreveport, Louisiana, decried the death of a "brave" police officer who was shot and killed while on duty.

Shreveport police officer Thomas LaValley, 24, was shot multiple times while answering a call about a suspicious person at a home in the city's Queensborough neighborhood Wednesday night.

"Last night, we lost one of our brave, uniformed officers in the line of duty. Our hearts are saddened," Mayor Ollie Tyler said in a statement. "We ask for the community's prayers for this officer's family and SPD as we grieve the loss of one of our own who paid the ultimate sacrifice while serving and protecting the citizens of this city."

A search continues for Grover Cannon, 27, the suspect in the killing.