LOS ANGELES — Police arrested a man they believe fatally stabbed a 59-year-old man on the L.A. Metro Red Line following an altercation last weekend, according to ABC News 7.

The incident was the first-ever murder on the Red Line in the 17 years that it has been open. For the full story, click here.

In response to the arrest, L.A. Metro Board Chair and Los Angeles Mayor Antonio Villaraigosa released the following statement:

"I congratulate Los Angeles County Sheriff Baca and his team on making an arrest in this case. I am confident they will conduct the case in a swift and responsible manner.

"I want subway riders to know they are safe. Our transit system as well as our streets and neighborhoods are the safest they've been in a generation. Crime in Los Angeles is down to levels we have not seen since the Eisenhower Administration. Immediately following the incident Friday night, the Sheriff's Department increased the number of deputies on the Red Line and additional deputies will be on patrol during the evening hours.

"Though we cannot prevent every random act of violence, I will continue to work hand-in-hand with the Sheriff's department and the MTA to keep public transit safe in Los Angeles. I have asked the MTA and the Sheriff's Department to review security on the rail and bus system to ensure we maintain appropriate levels of security as we build the 21st Century transit network Angelenos deserve."