Pair bound with tape during robbery in Darwen
A Lancashire family have been left "badly shaken" after being tied up during a robbery at their home.
A 57-year-old woman and 49-year-old man were bound with tape during the raid on the house in Bolton Road, Darwen, on Tuesday evening.
Three men wearing balaclavas forced their way into the house and, after assaulting the man, took valuables.
Det Insp Mark Winstanley said it was "a serious offence which has naturally left the householders upset".
The man and woman, along with an 87-year-old woman, were threatened by the men after they went outside to investigate noises.
The men, armed with baton-type weapons, demanded money from the pair before taking them back into the house and tying them up.
'Rural and secluded'
The offenders searched the house for cash and jewellery and then left in the family's silver Ford Ranger.
The car was found abandoned nearby by police on Stones Bank Road a short while later.
Mr Winstanley said forensic officers were "continuing to examine the scene and we will be carrying out house to house inquires".
"This has happened in a very rural and secluded area, but I would appeal to anybody that has seen anything suspicious either last night or in the days and weeks leading up to the offence to come forward," he said.
"It is likely that the offenders have fled from Stones Bank Road in a second vehicle, so I would also appeal to anybody in this area that believes they have seen anything suspicious to report it."