St Bartholomew’s Church in Groton is the ninth church to be targeted by lead thieves in just over a month.
The latest incident is thought to have taken place between 5pm, October 2, and 9am the following morning.
Removing lead from the roofs of churches across the county, this time the thieves damaged stone buttresses while stripping the main roof.
The latest theft was discovered by a dog walker, who spotted pieces of lead and indentations in the grass outside the church on Saturday morning.
It is believed that the thieves may have been disturbed and fled with only a small amount of metal.
The Grade One, 15th century building - which has close links with the Founding Fathers in the USA - is the latest in a string of ancient churches in the county targeted by metal thieves in recent months.
Other churches that have been targeted include Lavenham, Combs, Parham, Dennington, Hundon, Stratford St Mary, Hawkedon and Chevington.