Satellite imagery and tourist photos taken in August and September have revealed the rapid manner in which North Korean authorities have rebuilt an apartment block that collapsed in Pyongyang earlier this year.

The photos, which show a new building standing at almost the same height as a 23 floor apartment block which collapsed in May 2013, raise fresh concerns about building safety in Pyongyang, despite pledges towards increased safety made by Kim Jong Un following May’s accident.

Yet despite uncharacteristically admitting to construction quality problems as the cause of the May 13 building collapse, the latest photos