A violent shootout last night resulted in the death of 26-year-old MIT security guard, Sean Collier, as well as the death of suspected Boston bomber Tamerlan Tsarnaev, who was shot in Watertown, Massachusetts. The city of Boston is currently on lockdown.

Reddit has found another eerie piece of photographic evidence in the Boston Marathon bombing. The photo above shows bombing victim Martin Richards, 8, circled in red, standing on the barrier while the individual, now only known as Suspect #2, circled in green, passes just feet behind him, possibly in the act of…

After viewing security-camera footage from the surrounding area, investigators have identified a "possible suspect" in the Boston Marathon bombings, several outlets are now reporting.

Sue Ann Marcum, a 52 year-old professor at American University, was found murdered in her home in the DC suburbs last year. The prime suspect in the case is Jorge Rueda Landeros, a yoga instructor who has now reportedly fled to Mexico. But that hasn't stopped him from making beautiful, fugitive poetry.

The NYPD has released video of a man pulling a gun on a Queens cab driver before shooting him several times. The suspect is still at large. This is one of those times we're glad Big Brother was watching.

The NYPD has released security camera footage of two suspects in last week's murder of weed-selling Pace University student Max Moreno in his financial district high rise. Seen these guys? Don't sell them weed. Call the police instead. [Previously]

Police yesterday arrested a man suspected of being the serial killer who's attacked 20 victims in Michigan, Ohio, and Virginia, killing five. The suspect worked at a party store, and was reportedly "really flirty with the ladies." [Pic: AP]

Raymond Clark III has gone from "Person of Interest" to accused perp. The Yale lab tech was arrested this morning and charged with killing Annie Le. At least all the scrutiny wasn't misdirected. The latest news makes him sound worse.

Yale lab technician Ray Clark, the only "person of interest" in the Annie Le murder so far, is free for the moment. In the last 24 hours, we've learned a lot about Ray Clark.

Fancy Georgetown University is being stalked by a sex criminal (nicknamed the "Georgetown Cuddler," cute) who breaks into women's bedrooms and assaults them as they sleep. Police have not been able to track down a suspect of this description:

The Satanic Myspace page of 16-year-old John Katehis, who confessed to murdering newsman George Weber, has already been deleted. We've salvaged quite a few of his photos. Here, the complete, creepy collection: