Please join me in praying for the victims of the explosion in Texas and their families, Pope Francis says on Twitter\"Please join me in praying for the victims of the explosion in Texas and their families,\" the Argentinian pope tweeted in English.The blast in the small town of West, near Waco, stoked anxiety in a nation already on edge after the nerve-jangling Boston marathon bombings, which left three dead.An apartment complex and a nursing home were destroyed, local residents flooded into emergency shelters, and at least 100 patients were hospitalized following the blast.