Mexican Police Officers Daniel Cruz Garcia and Zeferino Morales Franco have 3.4 million pesos Bounty on their heads

Police stand guard at Benito Juarez International Airport after three officers were shot dead on June 25.

STORY HIGHLIGHTS

• The reshuffling comes nearly two months after three officers were killed in a shootout
• Two suspects in the shooting, accused being tied to a drug trafficking cell, remain at large
• Police are offering a reward for information leading to their capture

(CNN) -- Mexican authorities have replaced 348 federal police at the country's largest airport after a shootout there left three officers dead.

The officers have been moved from Mexico City's Benito Juarez International Airport to assignments in other states, federal police said in a statement Sunday. They were replaced by officers who went through a "double background check," the statement said.

The reshuffling comes nearly two months after a shooting sent passengers scrambling and left shattered glass on the ground near a food court at the airport.

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The shootout occurred when police were moving in to arrest fellow officers suspected of involvement in a drug trafficking ring, authorities have said.

Read: Mexican police arrest officer suspected in airport shooting

The two officers accused in the shooting, Daniel Cruz Garcia and Zeferino Morales Franco, remain at large. Authorities are offering a 3.4 million-peso ($260,000) reward for information leading to their capture.