The 39 people who were found dead in a refrigerated truck near London are Chinese, according to Reuters and the BBC.
Police have already questioned the 25-year-old driver, who has been arrested and suspected of murder.
Law enforcement has searched two homes in Northern Ireland as part of the investigation, Reuters reports.
Greece has launched an investigation after an inspection revealed that weapons were missing from a navy facility on the Aegean island of Leros, its government spokesman said on Wednesday.
Authorities found anti-tank weapons, ammunition and hand grenades missing from a warehouse on the base this week, according to officials.