Tragic end: Sim (left) and Tan said to have died of suffocation.
BUKIT MERTAJAM: A couple said to be in debt was found dead at a unit of Bayu Mutiara flats in Bukit Tengah.
Apparently, the man identified as Sim Hun Khong, 47, and his girlfriend Tan Soo Sim, 35, sealed themselves in their bedroom and burned charcoal inside.
