TERROR

FBI, Boston police to update on probe into possible beheadings, law enforcement attacks

  • First Assistant Suffolk County District Attorney Patrick Haggan points to surveillance video released during a press conference Monday, June 8, 2015, in Boston, which they say shows the fatal shooting of a Boston man suspected of plotting to kill police officers. The video comes from a restaurant across the street, and the figures shown are blurry. Police and the FBI say it shows officers shooting 26-year-old Usaama Rahim on June 2 in the city's Roslindale neighborhood after they attempted to question him about "terrorist-related information." (AP Photo/Elise Amendola)

    First Assistant Suffolk County District Attorney Patrick Haggan points to surveillance video released during a press conference Monday, June 8, 2015, in Boston, which they say shows the fatal shooting of a Boston man suspected of plotting to kill police officers. The video comes from a restaurant across the street, and the figures shown are blurry. Police and the FBI say it shows officers shooting 26-year-old Usaama Rahim on June 2 in the city's Roslindale neighborhood after they attempted to question him about "terrorist-related information." (AP Photo/Elise Amendola)  (The Associated Press)

  • First Assistant Suffolk County District Attorney Patrick Haggan points to surveillance video released during a press conference Monday, June 8, 2015, in Boston, which they say shows the fatal shooting of a Boston man suspected of plotting to kill police officers. The video comes from a restaurant across the street, and the figures shown are blurry. Police and the FBI say it shows officers shooting 26-year-old Usaama Rahim on June 2 in the city's Roslindale neighborhood after they attempted to question him about "terrorist-related information." (AP Photo/Elise Amendola)

    First Assistant Suffolk County District Attorney Patrick Haggan points to surveillance video released during a press conference Monday, June 8, 2015, in Boston, which they say shows the fatal shooting of a Boston man suspected of plotting to kill police officers. The video comes from a restaurant across the street, and the figures shown are blurry. Police and the FBI say it shows officers shooting 26-year-old Usaama Rahim on June 2 in the city's Roslindale neighborhood after they attempted to question him about "terrorist-related information." (AP Photo/Elise Amendola)  (The Associated Press)

Authorities are calling a news conference to provide an update into their investigation of a Boston terror plot that apparently involved planned beheadings and attacks on law enforcement.

The FBI, Boston police and the Suffolk County district attorney's office scheduled a briefing for 11 a.m. Monday on their joint investigation of 26-year-old Usaama Rahim.

Rahim was fatally shot June 2 after investigators said he refused to drop a military-style knife as they sought to question him about "terrorist-related information." Boston's Joint Terrorism Task Force says it had Rahim under 24-hour surveillance and feared an attack could be imminent.

The FBI says Rahim had ordered three large knives online. Rahim's nephew, David Wright, was arrested last week on a charge of conspiracy with intent to obstruct a federal investigation.