Four persons were killed and two injured when construction material being carried in a truck crushed an autorickshaw in Telangana's Sangareddy district on Monday, police said.The incident occurred in an industrial area near Indrakaran village.The heavy load being carried in a truck fell on an autorickshaw coming behind it. Four persons died on the spot while two injured were shifted to a local hospital.The deceased were labourers from Odisha working in a factory in the industrial area.