Berkeley Engineer Charged With Attempting to Fatally Poison Colleague
David Xu had allegedly been trying to poison a co-worker to death by putting cadmium in her food and water.

Stephane Mahe/Reuters
An engineer in Berkeley, California, has been charged with attempting to fatally poison his colleague over a period of several years, Berkeleyside reports. Prosecutors allege that David Xu, 34, a senior materials engineer at Berkeley Engineering and Research, Inc., tried to poison a female co-worker to death by putting cadmium, a toxic metal, in her food and water, court records show. At times, the woman noticed “a strange taste or smell from her water and food” after she had left it unattended in her office. After eating the food, the woman experienced “immediate and significant health problems” that caused her to seek medical attention. Xu was charged with three felonies, including premeditated attempted murder resulting in great bodily injury. Last year, two of the victim's relatives who drank from her water bottle also got sick, police say. Police reportedly obtained surveillance footage that shows Xu pouring a substance into the woman's water bottle on Feb. 11 and March 4. Water samples taken from the bottles on both of those dates tested positive for a toxic amount of cadmium. Blood samples obtained from the victim and her two family members also showed elevated levels of cadmium. Xu is being held without bail in Berkeley City Jail.
Register below to read this article for free or subscribe
to unlock unlimited access to The Daily Beast.
Monthly
$1
First month then $5.99/month
Annual
$35
First year then $59.99/year
Premium
$79
First year then $119.99/year
*Substack access provided by the next business day, using your subscription email. Choosing the Premium plan constitutes your permission to share your subscription email with Substack and your agreement to Substack’s Privacy Policy.
Already have an account? Sign In
Looks like you already have a subscription!
You're all set!
Thanks for subscribing.
