The National Investigation Agency (NIA) detained two people in Bihar's Arwal district to quiz them over the July 7, 2013, serial bomb blasts in Bodh Gaya, police said Friday.
A district police official said the NIA team detained two residents of Avgila village in the district.
Last week also, the NIA detained one person and interrogated him.
Ten bombs exploded at Bodh Gaya's Mahabodhi temple, in which two Buddhist monks were injured. Three live bombs were later defused in the temple precincts.