Summary for morning crew: 
- Thursday night robbery at 7-11 by two armed perps. 
- Shooting of MIT officer in vehicle a short while later, officer was killed. 
- Carjacking of Mercedes SUV following the officer shooting, carjacking victim released unharmed. 
- Rolling gunfight between BPD and perps in Mercedes who were  shooting and throwing grenades (types currently unknown, but scanner  traffic indicated automatic gunfire).  
One transit officer was hit and is in critical condition. 
- Vehicle halted and a gun battle ensued.  One perp was hit and  transported to hospital where he was pronounced dead.  Hospital call for  "code black" may have been related to explosives on perp's body, but  was later cleared. 
- A passerby was taken into custody by police and stripped to search for IEDs.  He's been questioned and is still being detained 
has been released. 
- Second perp eluded capture and is at large somewhere in a 20-block cordon in Watertown. 
- It has been confirmed that both perps are the suspects from the  Marathon bombing.  Dead perp is Suspect 1 from FBI photos.  Perp at  large is Suspect 2.  Scanner did name him as the missing student from  Brown, but this has not been confirmed or repeated. 
- Multiple SWAT are sweeping neighborhood, going house to house and  are apparently waiting for daylight to make entry into the suspected  hiding place. 
- According to WHDH 7News, EOD teams are dealing with multiple UXOs throughout the area. 
- Beth Israel ED director confirmed  in press conference that Suspect 1 suffered blast and thermal  injuries
- MIT classes canceled for the day.  MBTA services suspended until further notice. 
- Harvard classes also canceled.  Emerson, too. 
incident map - 
https://maps.google.com/maps/ms?msid=200082141349599835237.0004daaf434ba5147dce8&msa=0&iwloc=A
police radio feed - 
Boston Police, Fire and EMS Scanner - Boston, MA - Listen Online
local news feed - 
7News Live Streaming Video