HOUSTON, Texas (KTRK) -- Police say a healthcare worker was found shot to death, and the 90-year-old man who reportedly shot her was critically injured in southeast Houston on Monday afternoon.

Authorities said they responded to a home in the 11500 block of Panay Drive at about 1 p.m. Investigators told ABC13 that four people were inside the home at the time of the incident: an 87-year-old woman, a woman in her 40s identified as the 87-year-old's healthcare worker, a 90-year-old man, and a 40-year-old man identified as the healthcare worker's boyfriend.

HPD said initial information indicates that the 90-year-old man shot and killed the healthcare worker.