Five persons, mostly pilgrims, were killed and 19 others injured when a cement-laden lorry hit two vehicles before knocking down a roadside tea shop at Namanasamudram in the district, police said on Saturday. The deceased have been identified as B Jaganathan (60), S Santhi (55) and R Gokulkrishnan (26) of Tiruvallur district; S Satish (25) of Chennai, who died on the spot; and J Suresh (39) of Tiruvallur district who was declared brought dead at Pudukottai General Hospital.