Earlier in the day, the LAPD had canceled the alert, stating it had enough resources to keep its staffers safe. However, for reasons that weren't immediately clear, the department reinstated the alert sometime before 11 a.m.
The move came about the same time the department announced a modified lockdown at the Twin Towers Correctional Facility at 450 Bauchet St. amid reports that someone matching Dorner's description was seen in the area. Dorner's ex-wife works at the jail and as a precaution, officials decided to take extreme measures. Police closed the street directly in front of the facility and were not allowing anyone in or out of the arraignment center.
As the manhunt continues for Dorner, the LAPD is taking no chances when it comes to protecting officers and their families. As part of the tactical alert, no motorcycle officers will be on duty and officers must pair up, and work longer shifts.
Police presence grew Friday at the police headquarters in downtown Los Angeles. Some officers even showed up with riot gear and flak jackets. Police patrols also increased, but it was unclear how many officers were involved.
Officers were preparing for any developments as they hunt for a suspect who is also hunting them. In fact, the LAPD had previously sent about 40 protection squads to monitor officers mentioned in Dorner's manifesto.
"It's extremely, extremely manpower intensive, but the safety of my employees -- people that come on the job to protect the lives of strangers -- is of utmost importance to me, and I will expend any resources necessary," said Police Chief Charlie Beck.
Dorner, a former LAPD officer who was fired in 2008, is suspected of shooting three officers Thursday and penning a manifesto threatening more violence. He is also wanted for the murders of a couple in Irvine.