San Francisco judge declares mistrial in skateboard attack on security guard

A San Francisco judge has declared a mistrial in the skateboard attack that left a security guard with brain damage. The jury said it's "hopelessly deadlocked."

SAN FRANCISCO (KGO) -- A skateboarder accused of attacking a security guard in San Francisco will walk a free man.

RELATED: Suspect accused of attacking San Francisco security guard is well-known skateboarder

A judge Tuesday said the jury deadlocked and declared a mistrial in the case of 24-year-old Jesse Vieira.

Prosecutors say Vieira beat Dan Jansen when he tried to prevent Vieira from skating around a high-rise.

EXCLUSIVE: San Francisco security guard attacked by skateboarder is out of coma, but not well, family says

Jansen's family says he's now in an assisted living facility.

Report a correction or typo