Afghanistan, Dec. 25 -- Turkey detained over 152,000 undocumented refugees in the past year, with Afghans forming the largest group, amid tighter migration controls and growing human rights concerns.

More than 152,000 undocumented refugees were detained across Turkey over the past year, according to figures released by the Turkish Migration Authority. Afghan refugees made up the largest group, with over 42,000 detentions, placing them at the top of the list of migrants arrested by Turkish authorities.

After Afghans, the largest numbers of detainees came from Syria, followed by Uzbekistan, Turkmenistan, and Iran, underscoring Turkey's position as a key transit country for migrants seeking to reach Europe.

Official data also show a decline...