Guwahati, May 7: Tension prevailed in Goalpara district after locals blocked a highway on Saturday protesting against the Forest department's failure to control elephant attacks on villages that led to the death of three members of a family. Three members of a family -- two women and an infant -- were killed after a wild elephant raided Gendrapara village in the district late Friday night. Police had to resort to lathi charge to clear the highway.