diff --git a/src/integrator_types.jl b/src/integrator_types.jl
index 2b5ce25..06870bd 100644
--- a/src/integrator_types.jl
+++ b/src/integrator_types.jl
@@ -5,7 +5,7 @@ mutable struct DEOptions{SType,CType}
     callback::CType
 end
 
-mutable struct ODEInterfaceIntegrator{algType,uType,uPrevType,oType,SType,solType,P} <: DiffEqBase.AbstractODEIntegrator{algType, true, uType, Float64}
+mutable struct ODEInterfaceIntegrator{algType,uType,uPrevType,oType,SType,solType,P,CallbackCacheType} <: DiffEqBase.AbstractODEIntegrator{algType, true, uType, Float64}
     u::uType
     uprev::uPrevType
     t::Float64
@@ -18,6 +18,8 @@ mutable struct ODEInterfaceIntegrator{algType,uType,uPrevType,oType,SType,solTyp
     sol::solType
     eval_sol_fcn
     event_last_time::Int
+    vector_event_last_time::Int
+    callback_cache::CallbackCacheType
     alg::algType
     last_event_error::Float64
 end
diff --git a/src/integrator_utils.jl b/src/integrator_utils.jl
index 5ecd7bb..9ab9c86 100644
--- a/src/integrator_utils.jl
+++ b/src/integrator_utils.jl
@@ -8,13 +8,15 @@ function handle_callbacks!(integrator,eval_sol_fcn)
   discrete_modified = false
   saved_in_cb = false
   if !(typeof(continuous_callbacks)<:Tuple{})
-    time,upcrossing,event_occured,idx,counter =
+    time,upcrossing,event_occured,event_idx,idx,counter =
               DiffEqBase.find_first_continuous_callback(integrator,continuous_callbacks...)
     if event_occured
       integrator.event_last_time = idx
-      continuous_modified,saved_in_cb = DiffEqBase.apply_callback!(integrator,continuous_callbacks[idx],time,upcrossing)
+      integrator.vector_event_last_time = event_idx
+      continuous_modified,saved_in_cb = DiffEqBase.apply_callback!(integrator,continuous_callbacks[idx],time,upcrossing,event_idx)
     else
       integrator.event_last_time = 0
+      integrator.vector_event_last_time = 1
     end
   end
   if !(typeof(discrete_callbacks)<:Tuple{})
diff --git a/src/solve.jl b/src/solve.jl
index 5606eb3..dfdbe09 100644
--- a/src/solve.jl
+++ b/src/solve.jl
@@ -26,6 +26,13 @@ function DiffEqBase.__solve(
 
     callbacks_internal = CallbackSet(callback,prob.callback)
 
+    max_len_cb = DiffEqBase.max_vector_callback_length(callbacks_internal)
+    if max_len_cb isa VectorContinuousCallback
+      callback_cache = DiffEqBase.CallbackCache(max_len_cb.len,uBottomEltype,uBottomEltype)
+    else
+      callback_cache = nothing
+    end
+
     tspan = prob.tspan
 
     o = KW(kwargs)
@@ -69,7 +76,7 @@ function DiffEqBase.__solve(
     opts = DEOptions(saveat_internal,save_on,save_everystep,callbacks_internal)
     integrator = ODEInterfaceIntegrator(u,uprev,tspan[1],tspan[1],prob.p,opts,
                                         false,tdir,sizeu,sol,
-                                        (t)->[t],0,alg,0.)
+                                        (t)->[t],0,1,callback_cache,alg,0.)
     initialize_callbacks!(integrator)
 
     if !isinplace && typeof(u)<:AbstractArray