A former UCSB student wanted on charges of e-mailing threats to a university chemistry professor was arrested on Monday at Los Angeles International Airport.

University of California Police Dept. detectives arrested Arash Shamsian at LAX after he cooperated with the investigation and surrendered himself to authorities on hand. In response to the e-mailed threats, a campuswide warning was issued through the UCSB Alert System on Feb. 28, and the chemistry facility, as well as its surrounding areas, was placed under heightened surveillance.

UCPD spokesman Matt Bowman said the department worked in conjunction with federal law enforcement agencies to orchestrate the prearranged arrest, which required Shamsian to fly into the United States from his residence in Mexico and turn himself in.

According to a UCPD press release, the 27-year-old was then transported to the Santa Barbara County Jail and booked on felony charges of criminal threats. However, he was released after posting $20,000 bail. His preliminary hearing is scheduled for March 28, 2008.

UCPD initially declared Shamsian a person of interest in late February after it alleged that the string of threatening messages came from his e-mail account. However, police were unable to immediately locate the suspect as his last known residence was in Mexico.