(Adds more arrests)
TEHRAN, June 16 (Reuters) - Leading Iranian reformist Mohammad Ali Abtahi was arrested on Tuesday, his office said.
Abtahi, a former vice president who backed pro-reform candidate Mehdi Karoubi in last Friday’s disputed presidential election, was arrested in the morning, it said without giving further details.
Reformist sources said another prominent reformer, Saeed Hajjarian, was arrested on Monday.
Hajjarian is an ally of moderate Mirhossein Mousavi, who has formally appealed the result of the election which showed hardline President Mahmoud Ahmadinejad had won by a landslide.
Separately, the semi-official Fars News Agency quoted a senior police official as saying some "anti-revolutionary" people had been arrested with bomb material and weapons. (Editing by Angus MacSwan)