# Now that we have primary keys for each SNP, read in loci data
    with open(curLociFilePath,'r') as csvfile:
        data = csv.reader(csvfile,delimiter='\t')
        for row in data:
            if(len(row) == 4 and row[0] in documents):
                # Load loci in Mongo documents
                curDoc = documents[row[0]]
                if curDoc["loci"] is None:
                    curDoc["loci"] = [{"mrna_acc":row[1],"gene":row[2],"class":row[3]}]
                else:
                    curDoc["loci"].append({"mrna_acc":row[1],"gene":row[2],"class":row[3]})
                documents[row[0]] = curDoc

    # Data for reporting
    result.lociLoadEnd = time.time()
    result.totalDocuments = len(documents)

    print "Starting to insert " + str(result.totalDocuments) + " documents"

    # Log start time for MongoDB inserts
    result.documentInsertStart = time.time()

    if bulk:
        print "Bulk insertion starting"
        mongoCollection.insert(documents.values())
    elif mongoimport:
        mimpfile = "jsonchr" + str(curChr) + ".json"
        print "Writing json file for mongoimport"
        fp = open(mimpfile,'w')
        for curDoc in documents.values():
            json.dump(curDoc,fp)