The Japanese Olympic Committee (JOC) chief has urged his colleagues to choose their words carefully and avoid a repeat of a recent gaffe that may jeopardise Tokyo’s chances of hosting the 2020 Games.

Tokyo’s outspoken governor, Naoki Inose, who heads the city’s Olympic bid, apologised last week for “inappropriate” comments he made about rival candidate Istanbul and Islamic countries.

The remarks, made in a newspaper interview, prompted the International Olympic Committee (IOC) to investigate, while Turkey’s sports minister said they “did not comply with the spirit of the values of the Olympic Movement”.

JOC president Tsunekazu Ta-keda said Tokyo could not afford any more mistakes.

“I plead with you to observe the rules on bid activities and make sure this kind of trouble does not occur a second time,” Takeda told his colleagues at an executive meeting this week.

Madrid is the other city bidding to host the 2020 Games, the venue of which will be decided at the next IOC Session in Argentina in September.

Inose’s remarks sparked concern in Japan that they could have a negative impact on Tokyo’s bid to host the multi-sport event for a second time.

Former IOC vice president Chiharu Igaya also warned JOC members to be careful of what they said.

“Politics and religion are complicated issues,” Igaya said.

“If there are 115 members of the IOC and there will be 115 different ways of thinking,” he added.

“All we can do is do our utmost to make something good come out of this disaster.”