Irish marathon runner Stephen Scullion has announced he will not be taking part in the Tokyo Olympics.

Scullion, who spoke to RTÉ Sport recently about his mental health struggles, wrote on Twitter: "I will not be going to Tokyo Olympics, & until I feel in a better place with mental health I am taking some time to myself. I apologise to anybody who has supported me until now and feels lets down. Sometimes in life you have to do what is right, and I need to find a happy place".

The 32-year-old qualified for Tokyo with a run of 2:11:52 back in January 2020 but found training in isolation during Covid-19 lockdowns tough and briefly retired last summer before changing his mind.

He then became the second-fastest Irish marathon runner of all-time in October 2020, clocking 2:09:49 (just 34 seconds than John Treacy's 1988 mark) in London.

Scullion was 43rd at 2019 World Championships.

His withdrawal means Paul Pollock and Kevin Seaward will be Ireland's representatives in the men's marathon.