Mumbai police have arrested a BMC engineer and a JCB machine driver in connection with the death of a four-year-old boy after a house collapse here, an official said on Monday.

Six people, including an infant, were also injured in the incident which took on Saturday in Lalji Pada area of suburban Kandivali when the Brihanmumbai Municipal Corporation's (BMC) maintenance department was carrying out a "minor road work" in R-South Ward.