Commuters make their way through Wiehle-Reston East Metro station on the Silver Line. (Photo by Salwan Georges/The Washington Post)

An eight-car Metro Silver Line train separated into two segments in Northern Virginia on Saturday, but no one was injured, the transit agency said.

About 70 passengers were aboard the 6000-series train when the front cars separated from the back while it was traveling through the McLean area around 10:45 a.m., a Metro spokeswoman said.

The decoupling separated the front five cars from the three in the rear. According to the spokeswoman, the separation occurred between the fifth and sixth cars.

Metro said the train’s brakes engaged as they are designed to do, and all the cars halted safely, Metro said.

Metro said passengers continued their trips on another train.

The cause is under investigation, Metro said. It said all its 6000-series trains have been inspected to prevent a repeat of the incident. Some cars in the 5000 series have also been inspected, Metro said.

Cars in the 6000 series went into service in 2006; the 5000 series cars are five years older.