Show all ROAs for an ASN

I have an rpki-rtr session to my bird instance. All v4 roas go to a table called roa_v4, and v6 goes to roa_v6 - Is there a way in a single query to show me all ROAs from an ASN without listing them all? Right now I'm doing something like this, which is extremely messy: birdc 'show route all table roa_v4' | grep AS13414 It would be ideal to have something like show route all table roa_v4 source 13414 - Am I missing something here? Thanks Darren