Bangladesh Premier Sheikh Hasina was accorded a warm welcome upon her arrival at the Government House, the Thai premier's office
The husband, Swapan Mia, 40, and their two sons, a grade IX student and the other of grade II, were admitted to Dhaka Medical College Hospital after the incident on Friday morning.
The deceased, Joytsna Begum, 30, hacked Swapan and tried to slit his throat after drugging their two children, Jatrabarhi Police Station OC Wazed Ali told bdnews24.com.
She finally hanged herself from the ceiling fan of a room at the house, the OC said.
Quoting their neighbours, Dhaka Metropolitan Police Deputy Commissioner Md Farid Uddin said the couple had often quarrelled over an alleged extramarital affair of Swapan.
Swapan was a salesman of a shop on Bailey Road, police said.