Officials of Andhra Pradesh Police detained four persons and seized gold bars worth Rs 2.5 crores from their possession in Tirupati district, a senior official said on Thursday.

Sullurupeta Deputy Superintendent of Police (DSP), Raja Gopal said that gold bars weighing 5.2 Kg worth Rs 2.5 crore were seized from two vehicles during an inspection at Doravarisatram toll plaza on Wednesday.

“We have detained four persons who were carrying the gold in two four-wheelers as they did not have any bills or documents for the gold,” the police officer said.

He said that a case has been registered and the seized gold has been handed over to Customs officials.

Further investigation is on in the case to unravel the smuggling network involved in the racket.