Le'Veon Bell is facing a four-game suspension for violation of the NFL's drug policy, according to sources.

The suspension is the result of a missed drug test, not a failed one. The reason it hasn't yet been announced is that the appeal process is still going on.

Bell was suspended for the first three games of 2015, which was later reduced to two games, for a violation of the policy on substances of abuse after he was arrested for marijuana possession and DUI in the summer of 2014.