Honestly its happened to a friend & not me....

A friend got talking to a guy online... but over time things were adding up about the guy. He asked for money to get back to the UK. He got back but was arrested for cocaine possession... contacted my friend but didn't actually ask for help. He didn't deny or confirm the drugs were his... she stopped replying to him & following day he texted as normal... shld my friend seek legal advice... she doesn't want to be seen as an accessory... no subject of drugs came up in their conversation till after he was arrested... I don't trust the guy & neither does my friend now but what should she do?