SANTA MONICA, Calif. (CBSNEWS.COM– Authorities say a man arrested Monday after an assault in Santa Monica, California is also behind a string of violent attacks in that city and downtown Los Angeles, and may be connected to a crime spree that started in Texas.

There have been seven violent attacks in less than three weeks, including four in Santa Monica, and CBS Los Angeles learned Monday night of the disappearance of two people from Houston who may be connected to the suspect.

Ramon Escobar, 47, is a person of interest in the disappearance of Rogelio Escobar and Dina Escobar — his uncle and aunt, Houston police said.

Both went missing in late August and foul play is suspected in their disappearances, according to the Houston Police Department.

The most recent attack was Monday. The victim suffered head injuries in an assault just before 7 a.m., according to Santa Monica Police Lt. Saul Rodriguez.

He was hospitalized with blunt force trauma after being treated at the scene.

Police later searched the area and arrested Escobar.

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