According to the Los Angeles Police Department, officers responded to a home in the 2200 block of Wall Street around 11:15 a.m.
Officials said the woman who called police had gone into her son's room after noticing a "distinct gas smell" in the home. The mother told police that's when she discovered the woman's body inside his room.
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The woman's identity has not been released.
Authorities said a possible suspect - a man in his 20s- is being sought.
Anyone with information is asked to call police.
City News Service contributed to this report.