According to officers, several men entered the house at around 3 a.m. on Wednesday.
A couple in their 60s was sleeping when the suspects rang their doorbell and kicked open their front door. The men barged into their bedroom, demanding them for money.
"They're just senior citizens, there is really no reason," said the couple's son Eric. He says his parents were shaken up and were transported to the hospital with non-life threatening injuries.
Authorities are investigating the incident. It is unclear why the couple was targeted.
"We do know that approximately four males forced entry into the home, robbed the residence, assaulted one of the victims, and they fled with an undetermined loss at this point," said Long Beach Police Commander Josef Levi.
Some residents said they have seen a spike in crime in the neighborhood in recent years.
"This neighborhood seems to be targeted, robbing a lot of houses," said neighbor Gus Santisteban. "My house has been robbed twice, my neighbor's house has been robbed twice." Santisteban said that additional neighbors have also been robbed.
"It's scary," said neighbor Liv McMillan. "When that happened to our neighbor's a week ago, we called a locksmith and got all our locks updated, got a new deadbolt, fixed the back door lock."
However, none of the recent crimes were a home invasion where the home was targeted while the residents were sleeping.
Anyone with information should call the Long Beach Police Department at 562-570-7236.