Just found this via google:
Eritrea's Christian Church Grows Despite Persecution
The Christian Post, 2004
(Excerpt)...Although the country (Eritrea) is officially touted as a republic, Nettleton says its government is a throwback to communism. "Even though they don't call themselves Communist now, the reality of life in Eritrea -- the reality of life for the Christians in particular -- is that this is essentially a communist nation."
The VOM spokesman says for Eritreans, that means the government and its officials seek to control everything, and "those who don't submit to their control face arrest and persecution."
With the exception of the four specified groups, evangelical faiths in Eritrea have been outlawed by the country's communist-style ruler, Nettleton says. He points out that those evangelical Christians not included among the Catholic, Lutheran, or Orthodox headings practice their beliefs at their peril.
http://www.christianpost.com/article/missions/797/full/eritreas.christian.church.grows.despite.persecution/1.htm