India, Jan. 30 -- A husband and wife were found dead and their three children hospitalised in critical condition in Greater Noida on Thursday, investigators familiar with the case said.

Officials said they are still probing probable motives in the case including if it was a case of poisoning, possibly an instance of attempted murder-suicide by the parents. So far, they have found no evidence of financial distress or any direct trigger.

The incident occurred in Sadullapur village. The family was discovered unconscious inside their locked home after relatives raised an alarm on Thursday morning. Prima facie, all five showed signs of poisoning, according to additional deputy commissioner of police (ADCP), central Noida, Santosh Kumar.

The...