Police have arrested Zambia's chief opposition leader.
Michael Sata, leader of the Patriotic Front political party and a critic of Zambia's president, was arrested on Tuesday and charged with the declaration of false assets. He was released on police bail.
His appearance in court has been set for Wednesday.
Guy Scott, secretary-general of the Patriotic Front, said: "He has been charged with making a false declaration on August 11 as part of his nomination for the presidential elections."
After his arrest, Sata said: "The government is very scared of me."
Sata had run for president in elections in September.
Under Zambian law, presidential candidates are required to state their assets and liabilities before they are allowed to contest elections.
Sata has been accused of lying when he filed his presidential nomination by alleging that a former minister and ally of Levy Mwanawasa, the president, owed him money.
The ruling Movement for Multiparty Democracy had asked the electoral commission of Zambia to disqualify Sata from running, but election officials instead referred the case to the director of public prosecution for investigation.
Zambia held elections in September in which Sata, 69, was runner-up to Mwanawasa. Mwanawasa was re-elected to a second five-year term.
Sata remains popular with many of Zambia's poorer citizens.
In his campaign, he accused Chinese and Indian investors in the country's mining industry of exploiting workers and paying too little tax.
He has also praised the policies of Robert Mugabe, the president of Zimbabwe.
Although Sata lost the presidential race, his party succeeded in a number of municipal elections, including in the capital, Lusaka.
He has vowed that in Patriotic Front municipalities central government policies will be ignored in favour of his party's agenda, including the implementation of an independent tax regime.