The Martyrdom of Polycarp
Martyrium Polycarpi
The Martydom of Polycarp. The Apostolic Fathers with an English translation by Kirsopp Lake. In Two Volumes. Vol. II. Cambridge, MA: Harvard University Press; London: William Heinemann Ltd. 1913
And this is also recorded in the writings of Irenaeus, that at the day and hour when Polycarp suffered in Smyrna Irenaeus, who was in the city of Rome, heard a voice like a trumpet saying: Polycarp has suffered martrydom.