Aleppo tunnel bomb 'kills 38 government troops'
Dozens of pro-government troops were killed when rebels blew up a tunnel underneath a building in the Syrian city of Aleppo, BBC reports.
According to the source, a UK-based monitoring group said 38 troops died in the blast, which it said happened on Thursday.
The Thuwwar al-Sham rebel group posted a video online that appeared to show a building used by government troops being destroyed by a huge blast.
Government forces backed by Russian air strikes have intensified their military campaign against the city's rebel-held areas in recent weeks.