Armed police were called to Gorseinon high street this morning after reports of a robbery at Lloyds.
South Wales Police say two men dressed in blue overalls with their faces covered entered the building holding weapons shortly after 10am. No one was injured during the incident.
Armed police attended the incident alongside the dog unit and police helicopter but officers say the suspects had fled before police arrived on the scene.
Police have confirmed the men had fled the scene empty-handed prior to the arrival of police
Detectives investigating appealing for anyone with information to come forward.
They said a section of High Street was closed off following the incident while forensic enquiries were carried out, and some local residents were asked to stay indoors for a short time as a precautionary measure.
Anyone with information should call 101.