Police are treating the death of a woman who was stabbed to death in a Dungannon street as murder and are following a definite line of inquiry.
Luisa Cabral Pereira Silva, 29, was killed during the incident in the Merron Mews area on Thursday.
A 36-year-old man taken to hospital with stab wounds remains in a critical condition.
Police said Ms Cabral, originally from East Timor, had an address at Lisnahull Road in Dungannon.
Both the dead woman and the injured man are believed to be migrant workers.
It is believed Ms Cabral was a mother-of-two.
A number of local people witnessed what happened. It is believed to be a domestic incident.
One eyewitness said: "My mum came into my room and happened to look out of the window. I looked out when she asked me what was going on and just saw the two of them lying there.
"We went outside and shouted for someone to ring an ambulance but one of the neighbours had already done it."
DUP MLA, Lord Morrow, said people in the area had witnessed an "horrific incident".
He added: "The schools are off at the moment, children are playing, young fellas are kicking football as would happen in in any normal community and that was happening here."
Police have appealed for anyone who was in the area on Thursday afternoon and has information to get in touch with detectives in Dungannon.