Créteil became a prefecture after the creation of the department of Val-de-Marne, resulting in an increase in population, and a new extension was quickly begun in several stages.
The line reached Maisons-Alfort – Les Juilliottes on 27 April 1972 in a tunnel.
It enters Créteil on 2-km, open-air tracks in the median of a highway.
The Créteil – L'Échat station, with a central platform, opened on 24 September 1973; Créteil – Préfecture, with three tracks and two platforms, opened on 10 September 1974.
This was the first Paris Métro connection with the prefecture of a bordering department, extending the line to over  and 37 stations.

The extensions triggered a change from a single fare to fares by section on 19 September 1970, when the extension to Maisons-Alfort – Stade opened.
Stations are equipped with an automatic check at the exit with a turnstile, and travellers paid a supplementary fare to exit.
The system returned to a single fare on 1 November 1982.

Line 8 is the site of the first unsolved crime in the history of the métro, which was widely reported.
On 16 May 1937 around 18:30, passengers at the Porte Dorée station discovered 29-year-old Laetitia Toureaux (an Italian-French widow of a Parisian craftsman) stabbed in a first-class carriage where she was alone.
The inquiry, conducted by the police chief, revealed that the woman led a varied life: working under a false name for a detective agency, frequently (and discreetly) visiting the Italian embassy and checking coats at a dance hall.
La Cagoule was suspected, but war broke out two years later and the case was closed unsolved.
The story inspired Pierre Siniac to write Le Crime du dernier métro, a 2001 novel.
Créteil became a prefecture after the creation of the department of Val-de-Marne, resulting in an increase in population, and a new extension was quickly begun in several stages. The line reached Maisons-Alfort – Les Juilliottes on 27 April 1972 in a tunnel. It enters Créteil on 2-km, open-air tracks in the median of a highway. The Créteil – L'Échat station, with a central platform, opened on 24 September 1973; Créteil – Préfecture, with three tracks and two platforms, opened on 10 September 1974. This was the first Paris Métro connection with the prefecture of a bordering department, extending the line to over  and 37 stations.
The extensions triggered a change from a single fare to fares by section on 19 September 1970, when the extension to Maisons-Alfort – Stade opened. Stations are equipped with an automatic check at the exit with a turnstile, and travellers paid a supplementary fare to exit. The system returned to a single fare on 1 November 1982.
Line 8 is the site of the first unsolved crime in the history of the métro, which was widely reported. On 16 May 1937 around 18:30, passengers at the Porte Dorée station discovered 29-year-old Laetitia Toureaux (an Italian-French widow of a Parisian craftsman) stabbed in a first-class carriage where she was alone. The inquiry, conducted by the police chief, revealed that the woman led a varied life: working under a false name for a detective agency, frequently (and discreetly) visiting the Italian embassy and checking coats at a dance hall. La Cagoule was suspected, but war broke out two years later and the case was closed unsolved. The story inspired Pierre Siniac to write Le Crime du dernier métro, a 2001 novel.
Paris Métro Line 8