Question: How did the winner of the 1967 Pau Grand Prix die?

Context paragraphs:
1970 Pau Grand Prix: The 1970 Pau Grand Prix was a Formula Two motor race held on 5 April 1970 at the Pau circuit, in Pau, Pyrénées-Atlantiques, France.  The Grand Prix was won by Jochen Rindt, driving the Lotus 69.  Henri Pescarolo finished second and Tim Schenken third.

1933 Pau Grand Prix: The 1933 Pau Grand Prix was a motor race held on 19 February 1933 at the Pau circuit, in Pau, Pyrénées-Atlantiques, France.  It was the inaugural Pau Grand Prix (i.e. the first race that actually held "Grand Prix de Pau" title), although the numbering of the races may not have reflected this due to a confusion about the 1901 race at Pau.  The Grand Prix was won by Marcel Lehoux, driving the Bugatti T51.  Guy Moll finished second and Philippe Étancelin third.

1971 Pau Grand Prix: The 1971 Pau Grand Prix was a Formula Two motor race held on 25 April 1971 at the Pau circuit, in Pau, Pyrénées-Atlantiques, France.  The Grand Prix was won by Reine Wisell, driving the Lotus 69C.  Jean-Pierre Jabouille finished second and Jean-Pierre Jaussaud third.

1969 Pau Grand Prix: The 1969 Pau Grand Prix was a Formula Two motor race held on 20 April 1969 at the Pau circuit, in Pau, Pyrénées-Atlantiques, France.  The Grand Prix was won by Jochen Rindt, driving the Lotus 59B.  Jean-Pierre Beltoise finished second and Piers Courage third.

2000 Pau Grand Prix: The 2000 Pau Grand Prix was a Formula Three motor race held on 12 June 2000 at the Pau circuit, in Pau, Pyrénées-Atlantiques, France.  The Grand Prix was won by Jonathan Cochet, driving for Signature Team.  Tiago Monteiro finished second and Patrick Friesacher third.

1972 Pau Grand Prix: The 1972 Pau Grand Prix was a Formula Two motor race held on 5 May 1972 at the Pau circuit, in Pau, Pyrénées-Atlantiques, France.  The Grand Prix was won by Peter Gethin, driving the Chevron B20.  Patrick Depailler finished second and David Purley third.

1979 Pau Grand Prix: The 1979 Pau Grand Prix was a Formula Two motor race held on 4 June 1979 at the Pau circuit, in Pau, Pyrénées-Atlantiques, France.  The Grand Prix was won by Eddie Cheever, driving the Osella FA2/79.  Siegfried Stohr finished second and Marc Surer third.

Pau Grand Prix: The Pau Grand Prix (French: "Grand Prix de Pau" ) is a motor race held in Pau, in the Pyrénées-Atlantiques department of southwestern France.  The French Grand Prix was held at Pau in 1930, leading to the annual Pau Grand Prix being inaugurated in 1933.  It was not run during World War II.

Jochen Rindt: Karl Jochen Rindt (] ; 18 April 1942 – 5 September 1970) was a German-born racing driver who represented Austria during his career.  In , he was killed during practice for the Italian Grand Prix and became the only driver to be posthumously awarded the Formula One World Drivers' Championship.

1967 Pau Grand Prix: The 1967 Pau Grand Prix was a Formula Two motor race held on 4 April 1967 at the Pau circuit, in Pau, Pyrénées-Atlantiques, France.  The Grand Prix was won by Jochen Rindt, driving the Brabham BT23.  Denny Hulme finished second and Alan Rees third.

Supporting paragraphs: 1967 Pau Grand Prix Jochen Rindt
Answer: he was killed during practice