Libyan authorities have detained nearly 500 migrants in boats bound for Europe.

Despite the risk of arrest and detention, especially for sub-Saharan Africans, Libya continues to be a major transit point as well as a final destination for those seeking better work opportunities.

Most of those who get caught end up in rundown detention centers outside of Tripoli and don't know when they'll be released.

Al Jazeera's Andrew Simmons reports from Gharyan.

Source: Al Jazeera