The parents of a 23-year-old British woman missing in Guatemala have said they are "desperately worried" for her safety.

Catherine Shaw, from Witney, Oxfordshire, was reported missing on March 5 and has been travelling through the US, Mexico and central America since September last year.

She was last seen on March 4 and had been staying in the San Pedro, Lake Atitlan area of Guatemala with a friend.

In a statement released through the Lucie Blackman Trust, which is supporting her family, her parents said they have been "desperately worried" since her disappearance.

They said: "She has always been really good about keeping in touch and informing us of her whereabouts and activities.