A woman and her son were killed while her husband was grievously injured when a lorry knocked them down near Kempapura in Hebbal on Tuesday morning.
Radha (33) along with her husband, Tarachand (38), and son, Rahul (10), all ragpickers, were pushing a tricycle used to carry the garbage when the accident occurred.
Radha and Rahul were killed on the spot while Tarachand sustained grievous injuries and was rushed to hospital. His condition is said to be critical.
The family hails from West Bengal and routinely segregated garbage and other materials and later would sell them to eke out a living.
The Hebbal traffic police have registered a case.
A 35-year-old woman committed suicide by hanging herself at her home in Mallasandra in Peenya police limits on Monday night.
The deceased Kavita, who was separated from her husband eight years ago, was residing with her parents. She was reportedly suffering from asthma and had recently been diagnosed with lung cancer. She had been depressed as her father too was suffering from the disease and could not afford her treatment.