Key witness in Jay Slater disappearance was once jailed over Cardiff drugs operation
![Key witness in Jay Slater disappearance was once jailed over Cardiff drugs operation](https://i2-prod.walesonline.co.uk/news/uk-news/article29508639.ece/ALTERNATES/s615/3_thp_015016jpg.jpg)
Ayub Qassim was jailed in 2015 - but an associate says he is 'a quiet, polite and gentle fella'
Ayub Qassim was jailed in 2015 - but an associate says he is 'a quiet, polite and gentle fella'