Following a tip-off, an ACB team tailed Executive Engineer R B Singh from Jodhpur to Ajmer where he met the second accused R S Meena, an Assistant Engineer, and travelled with him in a different vehicle to Jaipur.
The team stopped the duo in Bhankrota area near here and checked the car in which a briefcase containing Rs 5.70 lakh was found. Rs 23,000 was also recovered from Singh's personal possesion.
"The officials are being questioned by the ACB team to ascertain the source of the money," an ACB spokesperson said.