June 2 (Reuters) - U.S. prosecutors are investigating

whether Indian billionaire Gautam Adani's companies imported

Iranian liquefied petroleum gas into India through their Mundra

port, the Wall Street Journal reported on Monday.

A WSJ investigation found tankers traveling between

Mundra in the western Indian state of Gujarat and the Persian

Gulf exhibited traits experts say are common for ships

evading sanctions, the report said.

The U.S. Justice Department is reviewing activities of

several LPG tankers used to ship cargoes to Adani Enterprises,

the WSJ said, citing people familiar with the matter.

Reuters could not immediately confirm the report.

"Adani categorically denies any deliberate engagement in

sanctions evasion or trade involving Iranian-origin LPG," a

company spokesman told the WSJ in a statement. "Further, we are

not aware of any investigation by U.S. authorities on this

subject."

Adani, the U.S. Department of Justice and the U.S.

Attorney's Office in Brooklyn did not immediately respond to

Reuters request for comment.

U.S. President Donald Trump said in May that all

purchases of Iranian oil or petrochemical products must stop and

any country or person buying any from the country would be

immediately subject to secondary sanctions.

Any inquiry into Adani would come months after U.S.

authorities indicted Adani and his nephew, Sagar Adani, alleging

they paid bribes to secure power supply contracts, and misled

U.S. investors during fund-raising in the United States.

Adani Group has called the accusations "baseless" and

vowed to seek "all possible legal recourse".