Three women and a 5-year-old boywere killed and 22 people were injured when their pick-up van overturned in Chhattisgarh's Raigarh district, police said on Sunday.The accident took place on Saturday night under Dharamjaigarh police station limits when 30 villagers from Lailunga were returning after visiting a temple in Ambetikara, an official said."The driver lost control of the speeding vehicle near Charkhapara village after which it skidded off the road and overturned. Three women and a 5-year-old boy were killed on the spot," he said."The 22 injured have been admitted in a hospital in Pathalgaon in neighbouring Jashpur district," he added.