It was during New Year's Eve before 2017 that a lone perpetrator linked to IS attacked a nightclub in Istanbul.
39 people died and 79 were injured.
Against this background, Turkish authorities have increased their preparedness for New Year's celebrations, according to the state news agency Anadolu Agency.
A total of 41 IS terrorists were arrested in several different places in Turkey on Friday, according to the news agency.
Among them, 15 have been arrested in Istanbul.
It is not clear where a possible attack would have been planned.
On Thursday, the American embassy in Turkey also issued a warning that a possible attack could take place during the New Year celebrations in Turkey this year.
On Thursday, in addition to Friday's raids, 30 suspected IS terrorists were also arrested in the capital Ankara.
And also earlier this week, Turkish police raided several people with suspected IS links.