Two passengers on a United Airlines Boeing 757 flight from Newark to San Francisco were injured when the pilots responded to an onboard midair collision system warning, the Federal Aviation Administration said.

An United flight bound for San Francisco International Airport had to suddenly slow its descent to avoid another aircraft last week, leading to the hospitalization of two passengers, the airline said Tuesday.

The United Airlines flight was descending into San Francisco last week when it received a collision avoidance system alert. Two passengers were injured.

Two United Airlines passengers were sent to the hospital after they were injured during the descent of a San Francisco-bound flight on Thursday, the United team and the Federal Aviation Administration told KRON4.