The suspect fled in a white Mercedes-Benz coupe, officials reported.
The man had been riding a bicycle across the northbound lanes of the Los Coyotes Diagonal when he was struck, police spokeswoman Shaunna Dandoy said.
The collision left JP Goods Bakery on Willow Street and Easy Avenue with at least a broken window and security gate and a partially destroyed corner column, according to photos of the scene.
The second crash was one mile away.
The collision at 4:20 p.m. at the intersection of Atherton Street and Studebaker Road resulted in one minor injury.
The police officer, bicyclist and driver of the Camry were all sent to the hospital with non-life threatening injuries, police said.
Eight people were injured in the crash and three were transported to local hospitals, Long Beach Fire Department spokesman Jake Heflin said.
A truck ended up on a white sedan in a 3-vehicle crash that backed up traffic on the westbound 91 freeway at Bellflower Boulevard.
A truck hit the police cruiser that was going through the intersection at Willow Street and Santa Fe Avenue.
Three people were hospitalized after a crash that smashed a fire hydrant and ended with one car at least partially on top of another.