Cricket Australia has cleared six spectators at the SCG of racial abuse but has confirmed Indian players were vilified during the third Test.
CA launched an investigation with NSW Police after Indian fast bowler Mohammed Siraj complained of hearing racist slurs while fielding near the boundary rope on day four of the New Year's Test.
Six male fans were removed from their seats and questioned by police at the stadium.
While the spectators in question have been cleared of any wrongdoing, the investigation remains open with NSW Police.
"CA confirms that members of the Indian cricket team were subjected to racial abuse," CA's head of security Sean Carroll said.
"CA's own investigation into the matter remains open, with CCTV footage, ticketing data and interviews with spectators still being analysed in an attempt to locate those responsible.
"CA's investigation concluded that the spectators filmed and/or photographed by media in the Brewongle Stand ... did not engage in racist behaviour.
"CA has a zero-tolerance policy towards discriminatory behaviour in all forms and, as hosts of the Border-Gavaskar series, apologises to the Indian men's cricket team."
India made a formal complaint after play on day four, furious about some words levelled at Siraj and Jasprit Bumrah.
The situation escalated further later when play stopped for eight minutes after Siraj claimed more abusive comments were made to him.
Spectators who are found to have breached CA's anti-harassment code face lengthy bans, and possible police sanctions.
Australian Associated Press