3 people dead in unrelated attacks on Bay Area Rapid Transit stations in 5 days

Three people died in unrelated attacks at Bay Area Rapid Transit Stations in the span of just one week, authorities said.

The BART Police Department said Monday they arrested John Cowell, 27, a paroled felon accused of attacking two sisters with a knife at the MacArthur station in downtown Oakland on Sunday night.

The stabbing victims were identified as Nia Wilson, 18, who died from her injuries, and her sister, Lahtifa Wilson, 26.

split of suspect

John Cowell was taken into custody on Monday in connection with a stabbing attack at a BART station that left one person dead.  (Bay Area Rapid Transit via AP)

Cowell was identified by BART riders after his picture was distributed. He was seen on surveillance video wearing a white and gray sweatshirt and carrying a backpack.

Surveillance video on the train and at the station’s platform showed Cowell attacking Nia Wilson and her group. Footage showed the suspect fleeing the station through a parking lot and stripping off his clothes there. 

BART POLICE NAB SUSPECT IN DEADLY STABBING ATTACK

Cowell was held without bail “on charges of first-degree murder, assault with a deadly weapon and theft,” court records stated.

Bay Area Rapid Transit Police Chief Carlos Rojas speaks at a news conference in front of images of John Lee Cowell, a suspect wanted in the stabbings of two women at a BART station, in Oakland, Calif., Monday, July 23, 2018. A man fatally stabbed an 18-year-old woman in the neck and wounded her sister as they exited a train at a Northern California subway station in what officials said Monday appeared to be a random attack. (AP Photo/Jeff Chiu)

Chief Carlos Rojas said it was not immediately clear the reason for the stabbing attack.  (AP)

BART Police Chief Carlos Rojas said it was not immediately clear what the reason for the attack was.

“While we don’t have any facts that suggest he’s connected with any white supremacist group, we are going to explore all options,” Rojas said at a press conference on Monday night. Cowell is white and Nia Wilson was black.

“It was, in my close to 30 years of police experience, probably one of the most vicious attacks that I’ve seen,” Rojas said.

The stabbing attack came one day after Don Stevens, 47, was found unconscious on the BayFair station’s platform, the Sacramento Bee reported. Surveillance video showed a male punching Stevens in the head before he collapsed. He was transported to a hospital where he died from head injuries on Sunday. Police have not made any arrests in connection with Stevens’ death.

SUSPECT IN DALLAS OFFICER’S DEATH BACK IN CUSTODY AS OFFICIALS PUSH FOR TOUGHER BOND

Malika Harris places a candle down for her sister Nia Wilson at a makeshift memorial outside the MacArthur Bay Area Rapid Transit station, Monday, July 23, 2018, in Oakland, Calif. A felon on parole fatally stabbed 18-year-old Nia Wilson in the neck and wounded her sister Lahtifa Wilson as they exited a train at a subway station in what police said was an unprovoked attack. BART Police Chief Carlos Rojas said officers are scouring the area for John Cowell, 27, who is suspected in the Sunday night attack at the MacArthur Station in Oakland. (AP Photo/Lorin Eleni Gill)

A makeshift memorial was made for Nia Wilson who was killed in a stabbing attack on Sunday, July 22, 2018.  (AP)

On July 18, Gerald Bisbee, 51, was assaulted at the Pleasant Hill BART station, The New York Times reported. He died from an infection due to a small cut on his knee that he suffered in the attack. A suspect, Abdul Bey, 20, was arrested in connection with the attack.

BART spokeswoman Alicia Trost addressed the deaths in a statement to The New York Times.

“One week we can carry two million people and be extremely safe, but what happens in our community bleeds into our system and we have to deal with that too,” Trost said.

Fox News’ Samuel Chamberlain contributed to this report.

Kathleen Joyce is a breaking/trending news producer for FoxNews.com. You can follow her at @Kathleen_Joyce8 on Twitter.