OAKLAND — The police investigation into an attempted armed robbery Wednesday afternoon outside an East Oakland market — which saw a security guard fire a shot and three suspects later crashing a vehicle in Hayward — is continuing, authorities said Friday.

No one has been charged in the incident and additional suspects are being sought.

Police believe multiple suspects — some with guns, riding in several vehicles — were planning to rob a market at a shopping center in the 10900 block of International Boulevard about 3 p.m. Wednesday. Instead, the group was confronted by a security guard who fired at least one shot at some of them, prompting all the suspects to flee in the vehicles.

One of the vehicles was spotted by a motorcycle officer a short distance away. But when it failed to stop, officers on the ground turned the pursuit over to the Oakland police helicopter.

The helicopter tracked the vehicle to Hayward, where it collided with another vehicle near Hesperian Boulevard and Turner Court. The driver of that vehicle was later reported in stable condition with unspecified injuries.

An adult man driving the suspect vehicle and two male juvenile passengers were taken to a hospital. None of them are Oakland residents, authorities said.

It was not clear if they were still hospitalized Friday

Police said the case remains under investigation and no additional details are being released at this time.

Anyone with information may call investigators at 510-238-3326. Videos and photos that might assist in the investigation can be e-mailed to [email protected].