A woman has died after a shooting in Talbot Green in Rhondda Cynon Taf.
South Wales Police were called to the Green Park area of the town at about 18:10 GMT on Sunday.
The force confirmed a 40-year-old woman was found with serious injuries and died at the scene.
A 42-year-old man from Talbot Green has been arrested on suspicion of murder and is in police custody.
A number of crime scenes have been set up in the area as inquiries continue.
Road closures remain in place as officers gather evidence.
Det Ch Insp James Morris said: “I understand the concern this will cause the local community, and I want to reassure people that a team of experienced detectives are already working at pace to piece together the events of last night.”
Local residents said there has been a significant response from the emergency services, with police vehicles heading to the area at speed with their blue lights on.
A police helicopter arrived over Talbot Green at 18:30 on Sunday and circled the area before later returning to base in St Athan.
Talbot Green is a town 10 miles north-west of Cardiff.
