VILLAHERMOSA, Mexico -- (AP) -- At the end of a session marred by brawling
 and yelling, legislators in Tabasco state found themselves with two interim
 governors Tuesday -- and no agreement about which one should stay.

 Opposition legislators from the Tabasco State Congress appointed a second
 interim governor in a special session shortly after midnight after rejecting the
 candidate appointed Sunday by the outgoing legislature dominated by the
 Institutional Revolutionary Party, or PRI.

 When PRI lawmakers from the new legislature got wind of what had happened,
 they rushed back into the session Tuesday morning -- but arrived too late.

 Soon after, arguing lawmakers broke out into fights much like those that erupted
 Monday during the new legislature's first session when chairs went flying and
 windows were shattered in shoving matches and fistfights.

 Opposition lawmakers, mainly from the leftist Democratic Revolution Party, vowed
 to swear in their chosen candidate Tuesday but were blocked from re-entering the
 legislative building by militant PRI members. Their candidate, current interim Gov.
 Enrique Priego, was sworn in Sunday.

 ``This is an illegal act and the naming [of the second interim governor] has no
 validity,'' said PRI legislator Juan Molina de Cerra.

 Opposition legislators said they would try to find an alternate site to swear in their
 candidate, Adán López.

 President Vicente Fox, speaking during his daily news conference, said he would
 not intervene in the conflict.

 At the heart of the dispute is a decision handed down Friday by the federal
 Electoral Tribunal.

 The ruling deprived the PRI of the only governorship it had won since losing
 presidential elections in July after 71 years in power.

 The outgoing PRI-dominated congress used its last session Sunday to name
 Priego, a federal PRI legislator, the interim governor in charge of calling new
 elections.