Ukraine’s intelligence agency has arrested a woman who it accused of gathering information about President Volodymyr Zelensky’s itinerary ahead of a trip and also trying to pass information about military facilities to Russia.

The Ukrainian security service, the SBU, did not give the name of the alleged agent. A dark-haired woman in a black-and-white dress surrounded by two servicemen was seen in a picture published by the agency. All of the faces in the image were blurred.

The suspect was arrested in the southern Ukrainian port city of Mykolaiv, the security service said. President Zelensky last visited the city on July 27, his media channel reported.

The SBU also accused the alleged agent of trying to establish the locations of Ukrainian electronic warfare systems and ammunition depots near the port town of Ochakiv, 48 kilometres from Mykolaiv.

“Members of the SBU caught the traitor red-handed when she was trying to pass intelligence to the invaders,” the SBU said, adding that additional security measures were taken during the presidential visit.

The woman is from Ochakiv and used to work at an army store selling goods to soldiers at one of the local Ukrainian military units, the SBU said.

A court approved her arrest and, if convicted, she would face a prison term for up to 12 years, according to the statement.