Guwahati: During a regular checking in a Down Rajdhani Express (12423) on Thursday, Guwahati Railway police seized drugs in the form of tablets and apprehended two ladies in connection to the matter. It may be mentioned that 'Ya ba' formerly known as 'ya ma' are tablets containing a mixture of methamphetamine and caffeine. Ya ba tablets typically are consumed orally. Typical ya ba users are working males, aged 16–40 years old, and its use is not uncommon among both female and male sex workers in Thailand and Cambodia. Also Read: Yaba Tablets worth Rs 1 lakh seized from Rajdhani Express at Guwahati Station, One Apprehended.