Strunk was detained and released pending further investigation, according to Aurora police.
But the department said Tuesday that Strunk and Wertin were both arrested after new information, which has not yet been disclosed, developed in the investigation.
Both suspects face one charge of attempted murder in the first degree, FOX 31 reported.
Kevin Wertin, 27, who police said was assaulted by an alleged intruder, is facing an attempted murder charge, authorities say. (Aurora Police)
The man who was shot remained in critical condition Tuesday, police said. His identity was not immediately released.
The case remained under investigation. Anyone with more information was urged to contact Metro Denver Crime Stoppers at 720-913-7867.