CONFLICTS

Prosecutors question Guatemalan president's brother, son

  • Samuel Everardo Morales, the brother of Guatemala's President Jimmy Morales, left, is escorted by a police agent as he arrives to a courtroom in Guatemala City, Wednesday, Jan. 18, 2017. The Guatemalan state prosecutor arrested President Jimmy Morales's brother over a suspected corruption case involving his son. (AP Photo/Luis Soto)

    Samuel Everardo Morales, the brother of Guatemala's President Jimmy Morales, left, is escorted by a police agent as he arrives to a courtroom in Guatemala City, Wednesday, Jan. 18, 2017. The Guatemalan state prosecutor arrested President Jimmy Morales's brother over a suspected corruption case involving his son. (AP Photo/Luis Soto)  (The Associated Press)

  • Jose Manuel Morales Marroquin , the son of Guatemala's President Jimmy Morales, left, waits for the judge at a courtroom in Guatemala City, Wednesday, Jan. 18, 2017. Morales Marroquin and his uncle Samuel Everardo Morales are investigated for their involvement in a corruption case. (AP Photo/Luis Soto)

    Jose Manuel Morales Marroquin , the son of Guatemala's President Jimmy Morales, left, waits for the judge at a courtroom in Guatemala City, Wednesday, Jan. 18, 2017. Morales Marroquin and his uncle Samuel Everardo Morales are investigated for their involvement in a corruption case. (AP Photo/Luis Soto)  (The Associated Press)

  • Jose Manuel Morales Marroquin, the son of Guatemala's President Jimmy Morales, left, talks with a man as they wait inside a courtroom in Guatemala City, Wednesday, Jan. 18, 2017. Morales Marroquin and his uncle Samuel Everardo Morales are being investigated for their involvement in a corruption case. (AP Photo/Luis Soto)

    Jose Manuel Morales Marroquin, the son of Guatemala's President Jimmy Morales, left, talks with a man as they wait inside a courtroom in Guatemala City, Wednesday, Jan. 18, 2017. Morales Marroquin and his uncle Samuel Everardo Morales are being investigated for their involvement in a corruption case. (AP Photo/Luis Soto)  (The Associated Press)

Guatemalan prosecutors say they've detained the brother and are questioning the son of President Jimmy Morales in a case of alleged corruption.

A U.N. anti-corruption commission says they are suspected of submitting about $20,000 worth of false receipts in an alleged tax fraud.

The president's brother, Samuel, told reporters at the courthouse on Wednesday that he is cooperating with the investigation and said he is innocent.

Attorney General Thelma Aldana says she also sought a warrant for the president's son Jose Manuel Morales Marroquin, but he appeared voluntarily for questioning.

Guatemalan prosecutors backed by the U.N. commission have brought a string of anti-corruption cases, most notably against former President Otto Perez Molina.