San Francisco police threatened after officer-involved shooting

SAN FRANCISCO

Alejandro Nieto, 28, was shot and killed by officers last month in Bernal Heights Park. Police say he pulled out a stun gun and pointed it at officers, who thought it was a real handgun.

An anonymous threat vowed revenge for Nieto's death.

The call has prompted the department to warn officers to be on high alert while doing their jobs.

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