Русско-англо-русский юридический словарь

If there is a causal relationship between two things, one thing is responsible for causing the other thing. (COBUILD Advanced English Dictionary)

Causation is the "causal relationship between the defendant's conduct and end result". In other words, causation provides a means of connecting conduct with a resulting effect, typically an injury. In criminal law, it is defined as the actus reus (an action) from which the specific injury or other effect arose and is combined with mens rea (a state of mind) to comprise the elements of guilt. (Wikipedia)

The Independent Office for Police Conduct said there was no indication of a "causal link" between the actions of police and the presenter's death. (BBC)

Meta CEO Mark Zuckerberg testifies there's no "causal link" between "using social media and young people having worse mental health outcomes." (CNN News Central)