Death toll rises to 32 at petrochemical plant explosion

MEXICO CITY (Reuters) - Four more people have been found dead after last week's explosion at a petrochemical plant in southeastern Mexico, raising the death toll to 32, state oil giant Pemex and Mexican plastic pipe maker Mexichem said in a joint statement on Sunday. The vinyl petrochemical plant in the Gulf coast state of Veracruz is a joint venture between Pemex's petrochemical unit and majority owner Mexichem. Pemex's CEO has said that last week's blast was caused by a leak but he did not how the leak had happened exactly. It was the latest in a series of fatal accidents at the company. (Reporting by Adriana Barrera and Luis Rojas; Writing by Joanna Zuckerman Bernstein; Editing by Michael Perry)