diff --git a/dusken/api/membersbygroup.py b/dusken/api/membersbygroup.py
index e2867f1..74bac83 100644
--- a/dusken/api/membersbygroup.py
+++ b/dusken/api/membersbygroup.py
@@ -1,6 +1,8 @@
 from tastypie import fields
 from tastypie.authorization import Authorization
 from tastypie.bundle import Bundle
+from tastypie.exceptions import ImmediateHttpResponse
+from tastypie.http import HttpNotFound
 from tastypie.resources import Resource
 from dusken.models import Member, Group
 
@@ -24,7 +26,6 @@ class MembersByGroupResource(Resource):
         kwargs = {
             'resource_name': self._meta.resource_name,
         }
- 
         if isinstance(bundle_or_obj, Bundle):
             kwargs['pk'] = bundle_or_obj.obj.group_id
         else:
@@ -42,15 +43,31 @@ class MembersByGroupResource(Resource):
         pass # We can't return lists.
 
     def obj_get(self, request=None, **kwargs):
-        group_id = int(kwargs['pk'])
+        keys = kwargs['pk'].split("/")
+        group_id = int(keys[0])
         group = Group.objects.get(id=group_id)
 
+        member = None
+        if len(keys) > 1:
+            member_id = int(keys[1])
+            member = Member.objects.get(id=member_id)
+
+            if member is None:
+                return None
+
+            if member.groups.filter(name=group.name).count() == 0:
+                raise ImmediateHttpResponse(HttpNotFound())
+
         if group is None:
             return None
 
         obj = MembersByGroupObject()
         obj.group_id = group.id
-        for member in group.user_set.all():
+
+        if member is None:
+            for member in group.user_set.all():
+                obj.members.append(member.id)
+        else:
             obj.members.append(member.id)
 
         return obj
diff --git a/dusken/tests/membersbygroup.py b/dusken/tests/membersbygroup.py
index 8c454c2..b189009 100644
--- a/dusken/tests/membersbygroup.py
+++ b/dusken/tests/membersbygroup.py
@@ -7,6 +7,14 @@ class MembersByGroupTest(ResourceTestCase):
     def setUp(self):
         super(MembersByGroupTest, self).setUp()
 
+        self.member = Member(username='robert', email='robert.kolner@gmail.com', phone_number=90567268)
+        self.member.save()
+
+        self.group = Group(name="EDB", posix_name="edb")
+        self.group.save()
+        self.group.user_set.add(self.member)
+        self.group.save()
+
         # URI to get all members by group relations (not functional, needs more things at the end)
         self.url = '/api/v1/membersbygroup/'
 
@@ -27,10 +35,17 @@ class MembersByGroupTest(ResourceTestCase):
         self.assertHttpMethodNotAllowed(resp)
 
     def test_get_all_relations(self):
-        pass
+        url = self.url + str(self.group.pk) + "/"
+        resp = self.api_client.get(url, format="json")
+        self.assertValidJSONResponse(resp)
+        data = self.deserialize(resp)
+        self.assertEquals(len(data['members']), self.group.user_set.count())
+        self.assertEquals(data['members'][0], self.member.pk)
 
     def test_get_a_relation(self):
-        pass
+        url = self.url + str(self.group.pk) +"/" +str(self.member.pk) +"/"
+        resp = self.api_client.get(url, format='json')
+        self.assertValidJSONResponse(resp)
 
     def test_create_relation(self):
         pass