Authorities are investigating a stabbing of a security guard inside a Metrolink train near Acton on Sunday night, police said.

The stabbing happened around 9:30 p.m. just before arriving at the Acton Metrolink station.

The security guard was able to subdue the suspect with pepper spray and the help of the doctor.

Deputies made an arrest and the Antelope Valley 285 Train departed en route to its destination in Lancaster.

The security guard was treated for non-life-threatening injuries.

A 34-year-old mother of five was allegedly stabbed to death by her boyfriend in Simi Valley, police said.

Simi Valley Police responded to a call of domestic violence on Friday at 830 California Avenue.

The reported party stated that her mother was being stabbed by her boyfriend who she resides with, according to police.

When officers arrived at the home they found the victim, Jessica Tinoco, with multiple stab wounds in the face, chest and abdomen. Tinoco was transported to a nearby hospital where she succumbed to her injuries.

The accused attacker, 34-year-old Raymond Rivas, was arrested and booked into Ventura County Main Jail on charges of murder. Rivas was on Post Release Community Supervision at the time of the incident and was placed on a hold for violating probation.

An old oak tree rooted in controversy was assigned a historical landmark on Tuesday following a unanimous vote from the LA County Board of Supervisors.

Developers in 2002 were poised to knock down the oak tree “Old Glory” to make way for a subdivision in the Santa Clarita Valley.

The tree was eventually saved with the help of efforts from one man.

Environmental activist John Quigley spent 71 days on a wooden platform in the tree in protest of the city’s removal plan. Quigley would soon learn not everyone agreed with him.

“The windstorms, all the threats, the gunshots, the exploding mailboxes,” said Quigley.

When asked if it was worth it, Quigley’s response was “absolutely.”

A compromise was met and the tree was carefully removed from its original location and then replanted at its current home at Pico Canyon Park.

After 22 years since Quigley climbed the tree, Old Glory has become an LA County Historic Landmark, giving it protection from ever being targeted again.

“That tree is an incredible teacher, and I think will continue to teach now, with this landmark status,” said Quigley. “Never underestimate the power of one person to create a sea of change in society.”

Arborists believe the tree’s life dates back to the 1600s.