The 40-year-old who earned 57 England caps and whose clubs included Tottenham Hotspur, Newcastle United, Glasgow Rangers and Lazio, had been detained since being arrested at a Newcastle hotel.
Gascoigne was ordered into compulsory mental health custody after he refused to evacuate following a 3 a.m. fire alarm at the Gateshead Hilton Hotel. During his stay at the hotel, Gascoigne also reportedly ordered plates of raw liver to his room and answered his room door while naked.
He was held under Britain's Mental Health Act, which allows for compulsory assessment or treatment for people suspected of suffering from "severe mental impairment," "psychopathic disorder" or "mental illness."
Gascoigne's career was marred by on- and off-field problems. After his career peaked at the 1990 World Cup, where he helped England to a fourth-place finish, Gascoigne's troubles included several alcohol-related incidents.