Winnipeg police have arrested a second 15-year-old boy alleged to be connected to “random” attacks last week resulting in two homicides and one serious aggravated assault..Police had issued a Canada-wide warrant for the teen and obtained a temporary court order to name him and distribute a photo. .Now that he’s in custody his identity is again being withheld..Another 15-year-old identified as a suspect in the attacks was arrested and taken into custody last week..Police responded to a series of calls early on August 22..The body of Danielle Ballantyne, 36, a mother of four, was found in an apartment building at about 7 a.m..Earlier, Marvin William Felix, 54, was found nearby and rushed to hospital. .An initial charge of aggravated assault was upgraded to second-degree murder when the wheelchair-bound victim died from multiple injuries last Thursday..About a half hour before Felix was found, another man in his 50s was discovered in a parking lot two blocks away with traumatic injuries..He remains in hospital. As of Thursday, the most recent update, police said he remained in critical condition..The teens are charged with two counts of second-degree murder and one count of aggravated assault.