Police are on high alert in the marginal Moruga/Tableland constituency following the fatal police-involved shooting of Shumba James, a well-known resident and key witness in a 2011 police killings case.

James, 42, was one of four people killed in separate police shootings across the country within 12 hours on April 25.

Recently released without charge after being detained under a ministerial order during the now-ended state of emergency (SoE), James was shot alongside his friend, Visham Ryan Hosein, 33, in their home community of St Mary's Village, Moruga, shortly after 10 am.