There is speculation that the sighting may be related to the recent appointment of a new head of the Congregation for Divine Worship, who has been selected by Pope Benedict XVI with the mission of exterminating all liturgical abuse:
"...in recent Vatican news, Pope Benedict XVI ended speculation about Cardinal Arinze's replacement, announcing the new head of the Congregation for Divine Worship was an invincible Dalek warrior from the planet Sarko.
Benedict explained this move would mark the beginning of a new era of decisiveness. When asked his opinion on the future of ICEL, the extraterrestrial prelate responded, 'Exterminate! Exterminate!'
Commentators cautioned at reading too much into this statement, considering that is about the only thing Daleks say, until, when questioned about the USCCB, the new prefect responded 'Ineffable! Ineffable!'
On other extraterrestial matters, the news is not so good - Creative Minority Report is saying that the new X-files movie should be boycotted: it is, apparently, a hateful, virulently anti-catholic movie. Pity.