The two suspects posed as police officers when they broke into an apartment on White Knoll Drive near Alpine Street at about 10:45 p.m.
"I knew that there was a lot of commotion last night when I saw the helicopters," said neighbor Clementine Oliver. "I was very surprised that they would have targeted this neighborhood or the buildings around here because people know each other and really look out for each other."
Investigators say the suspects knocked on the family's door claiming that they were police officers. They told the family that their car was involved in an accident.
When the 55-year-old woman opened the door one of the suspect's grabbed the woman and threw her to the ground. Her 21-year-old son tried to help, but the intruder knocked him down as well.
Other family members ran outside screaming for help which scared away the suspects. According to detectives, the two men ran out without taking anything.
Investigators say the Cambodian family that owns a restaurant in Los Angeles may have been followed home and targeted for their money.
Residents say they are shocked by the violence.
"This is a very safe neighborhood and we were surprised," said neighbor Chase Rummonds. "These things happen and hopefully since it appears that it was premeditated we hope we will find out who perpetrated it."
No one was hurt, and the suspects fled in a dark-colored SUV.
No other suspect description has been released. Anyone with information is urged to call the LAPD at (877) LAPD-24-7.