SANTA MONICA (CBSLA) — A man is in custody after a brutal attack left a woman with critical injuries.

Authorities say Kevin Ferron is behind bars and charged with attempted murder for the attack on Anna Koosmann.

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The victim is his girlfriend, police said.

KCAL9’s Cristy Fajardo talked to neighbors — most of whom did not want to appear on camera. But they told her fights were not new in this couple’s apartment. Police were even called to the location on Christmas Day.

For months neighbors heard fights.

Some even snapped photos of police at the couple’s Santa Monica apartment building.

But on Friday night they saw crime tape go up as police arrested Ferrón.

“There were about four or five cops hanging around here, which is super atypical of this area,” says neighbor Lucca Pactrucci.

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Neighbors in the building on the 100 block of Sixth Street described a tumultuous and unstable relationship.

Koosmann has made the news before. She went viral in 2016 after she and her then boyfriend were arrested on a Delta flight for being unruly because a flight attendant wouldn’t let her use the restroom.

Neighbors say, unfortunately, they too saw disruptive behavior in their complex.

Booking information shows Ferron was arrested at least four times in the last year The most recent for a felony on January 21. And just weeks before, for what became a misdemeanor charge on Christmas Day.

Santa Monica Police couldn’t say why Ferron had been arrested that particular day but confirm they had been called to the apartment for reports of domestic violence.

Still, neighbors say it wasn’t long before they saw him back at their building.

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And many told Fajardo that they were saddened the arrest Friday ended with crime tape.