The MacArthur BART Station in Oakland was shut down for more than an hour Friday night while police investigated the stabbings of two passengers, authorities said.

The victims, both males aboard a Richmond-bound train, told BART police there had been an altercation on the train, BART spokesman Chris Filippi said.

They were being treated at Highland Hospital for non-life-threatening injuries, officials said.

For about an hour, the station was closed and trains were not stopping there while police investigated. Southbound trains resumed stopping at the station shortly before 9 p.m., but northbound trains continued to pass through without stopping while police investigated, Filippi said. About 20 minutes later, service to the station was fully restored, although one entrance to the station remained blocked off for the investigation.

The stabbings were the latest in a pattern of increasing crime on BART. Statistics for the first six months of 2018 show a 2 percent increase in violent crime over last year. If that rate continues for the rest of the year, it will show a 66 percent increase over the past five years.

In late July, three people died after violence on BART. Nia Wilson, 18, was stabbed to death in an unprovoked attack at the MacArthur Station platform. Don Stevens, 47, was punched by an unidentified man at Bay Fair Station, fell, struck his head and died. Gerald Bisbee, 51, died from an infected cut after being attacked at Pleasant Hill Station. Suspects have been arrested in all three cases.

During the investigation of the stabbings Friday night, passengers walked through MacArthur Station past two prominent altars for Wilson.

Lauren Hernández and Steve Rubenstein are San Francisco Chronicle staff writers. Email: lauren.hernandez@sfchronicle.com, srubenstein@sfchronicle.com Twitter: @LaurenPorFavor, @SteveRubeSF