Hillsborough documentary kicks off ESPN's 30 for 30 soccer series on Tuesday night

It's one of the most horrific tragedies the soccer world has ever seen.

On April 15, 1989 at Hillsborough Stadium in Sheffield, England, 96 people lost their lives at an FA Cup semifinal between Liverpool and Nottingham Forest. That was 25 years ago and yet the investigation into what happened continues today.

And on Tuesday night, ESPN will air the "definitive account" of the disaster when it kicks off its 30 for 30 soccer film series with "Hillsborough" (8 pm ET, ESPN). For a brief primer before Tuesday's documentary, catch the video report above by NBC Sports Network's Gary Lineker (WATCH IT HERE).

MLS supporters also made a point to remember those who lost their lives, with banners and other tributes in Week 6 matches.

The director of "Hillsborough," Daniel Gordon, who US soccer fans will be familiar with for his work on The Game of their Lives – the story of the USA's improbable World Cup victory over England in 1950 – spoke to ESPN's Keith Olbermann about the movie: