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Mother arrested after Sunnyvale infant is found dead

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A woman who threatened suicide in Sunnyvale on Friday was taken into custody for allegedly killing her infant son.

Officers from the Sunnyvale Department of Public Safety coaxed Leticia Serna, 27, down from a U.S. Highway 101 overpass Friday afternoon, according to the San Jose Mercury News.

Serna was initially transported to Santa Clara Valley Medical Center for evaluation before being booked into county jail on suspicion of murder, officials from the Santa Clara County Sheriff’s Department confirmed to the Mercury.

Serna’s 8-month-old son was found dead inside a Sunnyvale apartment earlier in the day on Friday, but the cause of death is undetermined. The county medical examiner will conduct an autopsy on Monday, the Mercury News reports. An official cause of death will determine what charges will be filed against Serna.

According to the Mercury, the infant’s body was discovered inside Serna’s apartment on San Aleso Avenue just before 2:30 p.m. Police reported seeing no clear sign of trauma.

Within minutes, police were notified of a woman hovering near the edge of the Mathilda Avenue overpass above Highway 101 and adjacent to her apartment complex.

“She was arrested as she apparently looked to leap,” Mercury News reporter Sean Webby wrote.

Serna remains in Santa Clara County Jail without bail. Anyone with information on the child’s death is asked to contact the Sunnyvale Department of Public Safety at (408) 730-7110. Those wishing to remain anonymous may contact

The baby’s death, which remains under investigation, is Sunnyvale’s second homicide of 2011.