Vuwani - Four people, who are believed to have started the demarcation protests in Vuwani, have been detained for questioning, Limpopo police said on Monday.Colonel Ronel Otto said the four were arrested during the night."They have only been taken in for questioning. They have not been charged with anything yet," Otto said.Vuwani residents burnt down and vandalised dozens of schools in protests against a Municipal Demarcation Board decision earlier this year.The destruction started on April 29, when the Masia Traditional Council lost a court application to set aside the Municipal Demarcation Board's decision to merge the underperforming Vuwani municipality with parts of the Malamulele municipality in the Vhembe district.Nearly 53 000 pupils were affected by the protests and shutdown.On Monday, Electoral Commission of SA (IEC) CEO Mosotho Moepya said voting stations were not opened in Vuwani on Monday. The IEC decided to postpone special voting until Tuesday, due to the small number of applications received. Only 32 people had applied for special votes.