The investigation of the Veracruz state government over the source of 25 million pesos ($1.9 million) seized on a state plane in January has been closed and the money returned, the Mexican Attorney General's Office said.

"We are very happy because this has proven what the state government had said from the first moment about ... the legal origin and destination of these resources that came from the accounts of the state government and were destined for paying contractual obligations," Veracruz Planning and Finance Secretary Tomas Ruiz Gonzalez told Radio Formula.

Two Veracruz state government officials were arrested in late January at the international airport in Toluca, the capital of Mexico state, carrying a suitcase and backpack filled with the cash.

The AG's office said it was opening an investigation and a governing National Action Party, or PAN, senator filed a complaint against Veracruz Gov. Javier Duarte and the officials transporting the funds.

PAN officials alleged that the money was going to be used to finance the campaign of opposition Institutional Revolutionary Party, or PRI, presidential candidate Enrique Peña Nieto.

The PAN officials said it was suspicious that the money was seized in Toluca, where Peña Nieto lives, and accused the Duarte administration of embezzlement and diversion of public funds.

The Veracruz state government is in the hands of the PRI.

The decision by the AG's office "confirms that it was absolutely false," Ruiz Gonzalez said.

The two Veracruz officials, Said Zepeda and Miguel Morales Robles, told police the money was to be used to pay artists performing at the La Candelaria festival, the Veracruz Carnival and the Cumbre Tajin festival. EFE