Kaduna Senators Shehu Sani and Suleiman Hunkuyi were attacked by thugs during a press briefing in Kaduna on Sunday.
Sani, representing Kaduna Central, alleged the attackers were working for the state government.
The two senators had organized the press conference over alleged “manipulation of the party (APC in the state)” by Governor Nasir El-Rufai.
The governor and Sani have been in a long-drawn-out war since 2015.
Among those wounded in the attack were journalists, one of whom has been hospitalised.