Fans created a makeshift memorial near the scene, where they lit candles and paid tributes to the actor.
Some said they had heard rumours of Walker's death on social media and didn't first believe them.
"He's like one of the celebrities I actually thought was using his fame for good reasons, and so I wanted to come check it out to hope that it wasn't true, I guess," said Shane Ryan.
Walker was in the area to take part in a charity fundraiser for victims of Typhoon Haiyan in the Philippines.
