Two parents and two of their children were found dead Monday in what appeared to be a murder-suicide in Allen, Texas, weeks after their daughter drowned, police said.
Police on Tuesday said that father Farman Sherwani, mother Layla Sherwani and sons Mateen Sherwani, 2, and Shaheen Sherwani, 12, were found dead when officials responded to a welfare call at the home.
The Islamic Association of Allen, which initially identified the four family members, also said the family's 4-year-old daughter drowned three weeks ago in a swimming pool.
Allen Police Sgt. Jonathan Maness confirmed by email that detectives think the girl's drowning "is believed to be a factor."
Officers responding to a welfare call Monday morning discovered the four bodies in the home in Allen, a city about 30 miles north of Dallas, police said in a statement.
Another resident had been locked out for two hours and couldn't reach those inside, police said.
"After other family members arrived at the house, police gained access and found four people dead," the police department said.
It said it is investigating.
On Tuesday, the Islamic Association of Allen held a prayer vigil for the family at a venue packed with worshippers.
"We are deeply saddened by the news of the passing of four family members," the association said in a newsletter.
If you or someone you know is in crisis, call 988 to reach the Suicide and Crisis Lifeline. You can also call the network, previously known as the National Suicide Prevention Lifeline, at 800-273-8255, text HOME to 741741 or visit SpeakingOfSuicide.com/resources for additional resources.
This article was originally published on NBCNews.com