Ahmet Kemal Doğançay and Ali Kemal Doğançay -- the sons of Adatepe, who was killed in a traffic accident last year in İstanbul -- say they are preparing to file a lawsuit against the CHP and the İs Bankası if they refuse to pay the heritage to them.
They say their mother never succeeded in claiming her rightful inheritance from her father. In their letter they state that their mother's rights were violated, which is why they are asking for the money that belongs to her.
The sons sent the letters to the CHP and the İs Bankası through lawyers Osman Ersin Kozanhan and Erdi Yıldız. Kozanhan told reporters on Monday that they will hold a press conference on Jan. 30 to give detailed information about the letters.
The Dağançay brothers say they will decide whether they will file a lawsuit according to the responses to the letters.
Atatürk's adopted daughter, Adatepe, died in a car accident that occurred on Aug. 1, 2012, in Akyazı, east of İstanbul, along the TEM highway.
She died at the scene of the accident. She was 79.
İş Bankası was established by Celal Bayar on Atatürk's orders in 1924. Atatürk gave TL 250,000 of the total TL 1 million capital that founded the bank. Before he passed away, he left his property to the CHP, including his shares in the bank. The CHP and İş Bankası now act as business partners.
Adatepe's children said if they are denied their right to the inheritance, they will sue both partners.