Dr Sophon Iamsirithaworn, director of the general communicable diseases department, said on Friday that the new patient, a 51-year-old Thai woman, had taken the same Nok Air DD8717 flight to Don Mueang as the 25-year-old woman, who had secretly crossed over. The 25-year-old then took another flight to Phichit. 
The movements of both women are being tracked, Dr Sophon added.

Meanwhile, the two Thai nationals who have taken the legal route back home from Tachilek in Myanmar will join the Centre for Covid-19 Situation Administration daily press conference on Saturday to dismiss rumours that they had sneaked in.

Another local case linked to Thai-Myanmar border sneak

The Department of Disease Control has confirmed another Covid-19 case in Singburi, which can be linked to a Thai woman who sneaked across the border from Tachilek in Myanmar.