A service dedicated to Drummer Lee Rigby will take place at St Peter the Apostle Roman Catholic Church in Woolwich later today.
Father Michael Branch, who will lead the service, encouraged people of all faiths to attend.
"The doors to the church will be open to everyone, people of any faith or no faith,"
"It will be a call for us to go beyond our own faiths, to commit to reach out to other faiths and people of goodwill.
"They'll be thoughts and prayers for Lee, his wife, son and family, and for all the guys in the armed forces, particularly in Woolwich barracks.
"Together we can move forward positively and show there is absolutely no tolerance for intolerance."
The service is due to start at the church in Woolwich New Road at 11:45 am.
The family of Drummer Lee Rigby, killed in the Woolwich attack, paid an emotional tribute as they went to visit the scene of his murder.
The family of murdered soldier Lee Rigby paid tribute to him on Friday as detectives continued an investigation into his killing.
The family of the soldier killed in Woolwich paid tribute to "a loving son, husband, father, brother and uncle" as police made new arrests.