‘The act of sacrifice at TAI campus in Ankara at around 15:30 local time on Wednesday was carried out by a team of the immortals battalion’ ISTANBUL: The outlawed Kurdistan Workers’ Party (PKK) on Friday claimed a deadly attack on a state-run Turkish defense firm in the capital Ankara. “The act of sacrifice at TAI campus in Ankara at around 15:30 local time on Wednesday was carried out by a team of the immortals battalion” of the PKK, it said on Telegram, referring to Turkish Aerospace Industries.