The forensic department of Dhaka Medical College (DMC) yesterday sent samples of the internal organs of Japanese woman Hiroe Miyata to Mohakhali Government Lab to find the cause of her death, as it could not see any physical injury on the body because it was decomposed.

The secretly buried body was exhumed from the city corporation graveyard in Uttara Sector 12 in presence of police and an executive magistrate following a court order passed the day before.

Miyata, 60, was allegedly murdered and buried by some of her "business partners" nearly a month ago.

Dr Sohel Mahmud, assistant professor of the department, said the lab test results might come in two weeks.

The secret burial came to surface in police investigation after a Japanese Embassy official in Dhaka lodged a general diary (GD) on November 19 with Uttara East Police Station, saying she could not be contacted by her mother from Japan for a few days.

Police filed a murder case on November 22 and five suspects were arrested in this connection.

The body was kept at DMC, and the decision on her re-burial rests with the authorities concerned, said Abu Bakar Mia, officer-in-charge of Uttara East Police Station.