Israel’s president has spoken with his Turkish counterpart in a possible sign of warming ties between the once closely allied countries, whose relationship has been strained in recent years.

Reuven Rivlin said in a statement that he spoke by phone with Turkish President Recep Tayyip Erdoğan on Wednesday. Rivlin says they both expressed their condolences for the victims of a suicide bombing on Saturday in İstanbul.

Israeli tourists were among those killed and wounded in the attack.