Dhaka, Dec 02: Trains were attacked, crude bombs were hurled and vehicles were torched by violent BNP-led Jamaat protesters to oppose the announcement of Parliamentary elections in the country. The Election Commission wants to hold elections on January 5 next year, but BNP-led 18-party alliance is boycotting it and is demanding non-party interim government to oversee the contest. The 48-hour long nation-wide strike by Khaleda Zia-led BNP and its allies paralyzed business, education and health facilities across the country. Around a dozen people were killed in violence and over 50 injured. Protesters attacked the Election Commission offices in Bogra, causing damage to offices, official papers and voters ID cards. Miscreants damaged railway tracks and signal system in Brahmanbaria and Mymensingh which disrupted train services on Dhaka-Chittagong and Mymensingh-Netrakona routes.