A mother and daughter were stabbed several times outside the Riviera Apartments on Bolmore Drive after an argument early Tuesday morning.
San Antonio Police were called to the Southeast Side complex around 2 a.m.
Officers said the 16-year-old daughter had been stabbed several times in the stomach.
Her mother, a woman in her mid-30s, was stabbed more than once in the back. Both were taken to University Hospital in stable condition.
Police said the victims got into an argument with another person who is possibly a tenant at the complex.
Police were interviewing several witnesses and have not said what led to the argument. As of 7 a.m., the suspect had not been found.