Turkish police have found clues pointing to Pakistani links in last week's synagogue bombings in Istanbul, a report said on Thursday.

Three of the four Turkish suicide bombers involved in the attacks received training in Pakistan and Iran while the background of the fourth man was still not clear, The Turkish Daily News reported.

At least seven killed in Istanbul bombings

The paper also said that the police found pieces of a Pakistani passport believed to belong to one of the attackers. But it did not say why a Turk would have a Pakistani passport.

The local media carried the names and photos of the four terrorists on Thursday.

"Four Al Qaeda Turkish militants organised synagogue bombings," a headline in the Turkish Sabah newspaper said.

Six people were arrested on Wednesday in connection with the bombings.

Meanwhile, a police official in Dubai denied reports in the Turkish press that two accomplices of the attackers, Azad Ekinci, and Feridun Ugurlu, had fled to Dubai before the bombings.

The official said that they went through the airport records during the past month and the two names were not listed. They were checking the photographs published in the media to determine if the two had entered the country.