Turkey detains seven people over explosion at Tupras refinery - NTV

ANKARA (Reuters) - Turkish authorities have detained seven people over Wednesday's explosion in a storage tank at a Tupras refinery which killed four people, broadcaster NTV said on Thursday. The explosion occurred following maintenance work at the company's refinery in the western Turkish province of Izmir, but had no impact on production. (Reporting by Tuvan Gumrukcu; Editing by Daren Butler)