
On Tuesday, Yingluck said on Facebook that she had been followed by undercover officers while she was on vacation with her family in the popular resort town of Pai in Mae Hong Son.
She said they followed her closely and checked shops and venues she visited, in actions that seemed unrelated to legitimate security measures.
Yingluck is currently fighting accusations that she failed to prevent corruption in her government’s rice-mortgage scheme, which accrued losses to the state initially estimated at Bt500 billion. The government is demanding that Yingluck and members of her government personally pay compensation for the losses.
Prayut said Wednesday he apologised if officers had intruded on her privacy by taking photos of her, adding that he had since given orders for them to stop the surveillance.