Still revising vocabulary in LLPSI pars 1.
In Cap XXXIV Orberg has Cornelius explaining gladiatorial combat: 'Cornelius: "Alter alterum in rete implicare conatur, nam qui reti implicitus est non potest se defendere et sine mora interficitur, nisi tam fortiter pugnavit ut spectatores eum vivere velint.
rete, retis (n) is declined as follows:
rete, tete, rete, retis, reti, rete; retia, retia, retia, retium, retibus, retibus (n)
What is 'reti' in '...qui reti implicatus est'? I'd have used ablative 'rete'. Is it dative or locative (also 'reti'). Dowling gives 'reti' as alternative ablative and as locative.