Tarzana Neighborhood on Alert After Home Surveillance Captures Suspicious Man With Knife Outside Porch

A Tarzana neighborhood is on alert after a home surveillance system captured a suspicious man lurking outside a family's porch with a knife.

Kelley Voy woke up Wednesday and noticed that her front gate was wide open. She looked over her surveillance footage from the previous night.

That's when she saw it: a bearded man hanging out in her front porch with a large knife.

"He had a massive knife," Voy said. "If he got in, what was he going to do with that?"

She said she watched the man light and smoke a cigarette and hang out outside her home -- in northern Tarzana -- while she and her family were inside.

"I just went into an immediate panic," Voy said. "I don’t leave my house now without looking around all over the place."

Neighbors are equally concerned, and are taking extra measures to avoid break-ins.

"It's creepy to have a stranger with a big knife at your doorstep at 2:30 in the morning," neighbor Gianni Santangelo said. "We don’t know what his intentions were."

He added that he had seen the man riding a bicycle in the neighborhood earlier in the week.

Los Angeles Police Department detectives are investigating the incident, which occurred on a cul-de-sac near Victory Boulevard and Lindley Avenue.