Upon arrival at the airport, she is expected to face the arrest as the Supreme Court's Criminal Division for Holders of Political Positions has issued an arrest warrant for her and her husband on an alleged abuse of power when Thaksin was prime minister to buy Ratchadapisek plots of land.
The warrant alleged that the pair used their political influence, in violation of the law, to purchase the land from the Financial Institution Development Fund, an arm of the Bank of Thailand.
Thaksin is accused of using his identity card as prime minister to back up Pojaman's bid for the plot of more than 30 rai in Bangkok's Rachadapisek area.
The FIDF launched open bidding for the land and Pojaman got the land by offering the highest bid. However, the law forbids political-office holders from participating in the bidding for contracts from government agencies.
The court has put on hold the trial as Thaksin, who lives in exile in London and Hong Kong, and his wife failed to show up at the hearing. However the arrest warrants were still intact.
The same source said in case Pojamarn is arrested, she can apply for bail at the Supreme Court's Criminal Division for Holders of Political Positions.
Meanwhile Police Chief Pol Gen Seripisut Temiyavej confirmed that Pojamarn will return to Bangkok on Tuesday.
"We will provide safety for Khunying Pojamarn at the airport and prepare female police officers for her case.